diff --git a/eng/packaging.targets b/eng/packaging.targets
index d6344a0b666d7..2d0cb474720bb 100644
--- a/eng/packaging.targets
+++ b/eng/packaging.targets
@@ -60,7 +60,7 @@
     <ItemGroup>
       <TfmSpecificPackageFile Include="@(SatelliteDllsProjectOutputGroupOutput);
                             @(BuiltProjectOutputGroupOutput)">
-        <PackagePath>runtimes/$(_runtimeOS)/lib/$(TargetFrameworkWithoutSuffix)</PackagePath>
+        <PackagePath>runtimes/$(PackageTargetRuntime)/lib/$(TargetFrameworkWithoutSuffix)</PackagePath>
       </TfmSpecificPackageFile>
     </ItemGroup>
   </Target>
@@ -74,9 +74,18 @@
 
     <ItemGroup Condition="Exists('$(RuntimeSymbolPath)')">
       <TfmSpecificDebugSymbolsFile Include="$(RuntimeSymbolPath)">
-        <TargetPath>/runtimes/$(_runtimeOS)/lib/$(TargetFrameworkWithoutSuffix)/$(TargetName).pdb</TargetPath>
+        <TargetPath>/runtimes/$(PackageTargetRuntime)/lib/$(TargetFrameworkWithoutSuffix)/$(TargetName).pdb</TargetPath>
         <TargetFramework>$(TargetFrameworkWithoutSuffix)</TargetFramework>
       </TfmSpecificDebugSymbolsFile>
     </ItemGroup>
   </Target>
+  
+  <!-- Ensure that the IsPackable attribute in NetCoreAppLibrary.props is in sync with IsPackable properties in projects. -->
+  <Target Name="EnsureNetCoreAppLibraryIsPackableInSync"
+          BeforeTargets="Pack">
+    <Error Text="Please add $(AssemblyName) to the NetCoreAppLibrary IsPackable item update in NetCoreAppLibrary.props."
+           Condition="!@(NetCoreAppLibrary->WithMetadataValue('Identity', '$(AssemblyName)')->AnyHaveMetadataValue('IsPackable', 'true')) and '$(IsNETCoreAppSrc)' == 'true' and '$(IsPackable)' == 'true'" />
+    <Error Text="Please remove $(AssemblyName) from the NetCoreAppLibrary IsPackable item update in NetCoreAppLibrary.props."
+           Condition="@(NetCoreAppLibrary->WithMetadataValue('Identity', '$(AssemblyName)')->AnyHaveMetadataValue('IsPackable', 'true')) and '$(IsSourceProject)' == 'true' and ('$(IsNETCoreAppSrc)' != 'true' or '$(IsPackable)' != 'true')" />
+  </Target>
 </Project>
diff --git a/eng/references.targets b/eng/references.targets
index 6adcba9332289..fd2bf41e8dbf2 100644
--- a/eng/references.targets
+++ b/eng/references.targets
@@ -35,18 +35,23 @@
     </ItemGroup>
   </Target>
 
-  <!-- Make shared framework assemblies not app-local (non private). -->
-  <Target Name="UpdateProjectReferencesWithPrivateAttribute"
-          AfterTargets="AssignProjectConfiguration"
-          BeforeTargets="PrepareProjectReferences"
-          Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' and
-                     ('$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true') and
-                     '@(ProjectReferenceWithConfiguration)' != ''">
-    <ItemGroup>
-      <ProjectReferenceWithConfiguration PrivateAssets="all"
-                                         Private="false"
-                                         Condition="$(NetCoreAppLibrary.Contains('%(Filename);'))" />
-    </ItemGroup>
-  </Target>
+  <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' and
+                        ('$(IsSourceProject)' == 'true' or '$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true')">
+    <_projectReferenceWithOriginal Include="@(ProjectReference)"
+                                   Original="%(Identity)" />
+    <_projectReferenceByFileName Include="@(_projectReferenceWithOriginal->'%(FileName)')" />
+  </ItemGroup>
+
+  <!-- Make NetCoreAppLibrary P2Ps which aren't packable not app-local (non private). -->
+  <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp' and
+                        ('$(IsSourceProject)' == 'true' or '$(IsTestProject)' == 'true' or '$(IsTestSupportProject)' == 'true')">
+    <_projectReferencePackable Include="@(_projectReferenceByFileName)"
+                               Exclude="@(NetCoreAppLibrary->WithMetadataValue('IsPackable', ''))" />
+    <_projectReferenceNonPackable Include="@(_projectReferenceByFileName)"
+                                  Exclude="@(_projectReferencePackable)" />
+    <ProjectReference Update="@(_projectReferenceNonPackable->'%(Original)')"
+                      PrivateAssets="all"
+                      Private="false" />
+  </ItemGroup>
 
 </Project>
diff --git a/src/libraries/Microsoft.Extensions.Logging.Console/src/Microsoft.Extensions.Logging.Console.csproj b/src/libraries/Microsoft.Extensions.Logging.Console/src/Microsoft.Extensions.Logging.Console.csproj
index 0530b08235008..692131d7b3b66 100644
--- a/src/libraries/Microsoft.Extensions.Logging.Console/src/Microsoft.Extensions.Logging.Console.csproj
+++ b/src/libraries/Microsoft.Extensions.Logging.Console/src/Microsoft.Extensions.Logging.Console.csproj
@@ -47,6 +47,7 @@
     <ProjectReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.Logging.Abstractions\src\Microsoft.Extensions.Logging.Abstractions.csproj" />
     <ProjectReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.Logging.Configuration\src\Microsoft.Extensions.Logging.Configuration.csproj" />
     <ProjectReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.Options\src\Microsoft.Extensions.Options.csproj" />
+    <!-- Application tfms (.NETCoreApp, .NETFramework) need to use the same or higher version of .NETStandard's dependencies. -->
     <ProjectReference Include="$(LibrariesProjectRoot)System.Text.Json\src\System.Text.Json.csproj" />
   </ItemGroup>
 
@@ -60,4 +61,4 @@
     <NETStandardCompatError Include="netcoreapp2.0" Supported="$(NetCoreAppMinimum)" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/libraries/NetCoreAppLibrary.props b/src/libraries/NetCoreAppLibrary.props
index cd44cc99317ab..ac16d73a6ec01 100644
--- a/src/libraries/NetCoreAppLibrary.props
+++ b/src/libraries/NetCoreAppLibrary.props
@@ -149,5 +149,18 @@
   <!-- Make NetCoreAppLibrary available as an item. -->
   <ItemGroup>
     <NetCoreAppLibrary Include="$(NetCoreAppLibrary)" />
+    <NetCoreAppLibrary Update="
+      System.Collections.Immutable;
+      System.Diagnostics.DiagnosticSource;
+      System.Formats.Asn1;
+      System.Net.Http.Json;
+      System.Reflection.Metadata;
+      System.Runtime.CompilerServices.Unsafe;
+      System.Text.Encoding.CodePages;
+      System.Text.Encodings.Web;
+      System.Text.Json;
+      System.Threading.Channels;
+      System.Threading.Tasks.Dataflow"
+      IsPackable="true" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/libraries/System.CodeDom/Directory.Build.props b/src/libraries/System.CodeDom/Directory.Build.props
index 6821d51759dd1..b455ba6451dca 100644
--- a/src/libraries/System.CodeDom/Directory.Build.props
+++ b/src/libraries/System.CodeDom/Directory.Build.props
@@ -2,13 +2,6 @@
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <StrongNameKeyId>Open</StrongNameKeyId>
-    <PackageDescription>Provides types that can be used to model the structure of a source code document and to output source code for that model in a supported language.
-
-Commonly Used Types:
-System.CodeDom.CodeObject
-System.CodeDom.Compiler.CodeDomProvider
-Microsoft.CSharp.CSharpCodeProvider
-Microsoft.VisualBasic.VBCodeProvider</PackageDescription>
     <IncludePlatformAttributes>true</IncludePlatformAttributes>
     <UnsupportedOSPlatforms>browser;ios;tvos;maccatalyst</UnsupportedOSPlatforms>
   </PropertyGroup>
diff --git a/src/libraries/System.CodeDom/pkg/System.CodeDom.pkgproj b/src/libraries/System.CodeDom/pkg/System.CodeDom.pkgproj
deleted file mode 100644
index 86dceaae1b19c..0000000000000
--- a/src/libraries/System.CodeDom/pkg/System.CodeDom.pkgproj
+++ /dev/null
@@ -1,10 +0,0 @@
-<Project DefaultTargets="Build">
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
-  <ItemGroup>
-    <ProjectReference Include="..\ref\System.CodeDom.csproj">
-      <SupportedFramework>net461;netcoreapp2.0;uap10.0.16299;$(AllXamarinFrameworks)</SupportedFramework>
-    </ProjectReference>
-    <ProjectReference Include="..\src\System.CodeDom.csproj" />
-  </ItemGroup>
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
-</Project>
\ No newline at end of file
diff --git a/src/libraries/System.CodeDom/src/CompatibilitySuppressions.xml b/src/libraries/System.CodeDom/src/CompatibilitySuppressions.xml
new file mode 100644
index 0000000000000..ba057206fbd40
--- /dev/null
+++ b/src/libraries/System.CodeDom/src/CompatibilitySuppressions.xml
@@ -0,0 +1,634 @@
+<?xml version="1.0"?>
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <!-- These types are forwarded on net461 https://github.com/dotnet/sdk/issues/18203-->
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeArgumentReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeArrayCreateExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeArrayIndexerExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeAssignStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeAttachEventStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeAttributeArgument</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeAttributeArgumentCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeAttributeDeclaration</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeAttributeDeclarationCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeBaseReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeBinaryOperatorExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeBinaryOperatorType</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeCastExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeCatchClause</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeCatchClauseCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeChecksumPragma</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeComment</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeCommentStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeCommentStatementCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeCompileUnit</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeConditionStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeConstructor</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeDefaultValueExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeDelegateCreateExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeDelegateInvokeExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeDirectionExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeDirective</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeDirectiveCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeEntryPointMethod</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeEventReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeExpressionCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeExpressionStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeFieldReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeGotoStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeIndexerExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeIterationStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeLabeledStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeLinePragma</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeMemberEvent</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeMemberField</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeMemberMethod</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeMemberProperty</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeMethodInvokeExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeMethodReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeMethodReturnStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeNamespace</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeNamespaceCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeNamespaceImport</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeNamespaceImportCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeObject</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeObjectCreateExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeParameterDeclarationExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeParameterDeclarationExpressionCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodePrimitiveExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodePropertyReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodePropertySetValueReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeRegionDirective</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeRegionMode</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeRemoveEventStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeSnippetCompileUnit</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeSnippetExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeSnippetStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeSnippetTypeMember</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeStatementCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeThisReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeThrowExceptionStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTryCatchFinallyStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeConstructor</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeDeclaration</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeDeclarationCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeDelegate</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeMember</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeMemberCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeOfExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeParameter</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeParameterCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeReferenceOptions</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeReference</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeReferenceCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeTypeReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeVariableDeclarationStatement</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.CodeVariableReferenceExpression</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.FieldDirection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.MemberAttributes</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CodeCompiler</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CodeDomProvider</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CodeGenerator</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CodeGeneratorOptions</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CodeParser</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CompilerError</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CompilerErrorCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CompilerInfo</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CompilerParameters</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.CompilerResults</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.Executor</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.GeneratorSupport</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.ICodeCompiler</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.ICodeGenerator</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.ICodeParser</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.LanguageOptions</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.CodeDom.Compiler.TempFileCollection</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:Microsoft.VisualBasic.VBCodeProvider</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:Microsoft.CSharp.CSharpCodeProvider</Target>
+    <Left>lib/netstandard2.0/System.CodeDom.dll</Left>
+    <Right>lib/net461/System.CodeDom.dll</Right>
+  </Suppression>
+</Suppressions>
\ No newline at end of file
diff --git a/src/libraries/System.CodeDom/src/System.CodeDom.csproj b/src/libraries/System.CodeDom/src/System.CodeDom.csproj
index 7977a719807fb..40fb138bb656d 100644
--- a/src/libraries/System.CodeDom/src/System.CodeDom.csproj
+++ b/src/libraries/System.CodeDom/src/System.CodeDom.csproj
@@ -4,6 +4,14 @@
     <DefineConstants>$(DefineConstants);CODEDOM</DefineConstants>
     <TargetFrameworks>$(NetCoreAppCurrent);netstandard2.0;net461</TargetFrameworks>
     <SetIsTrimmable>false</SetIsTrimmable>
+    <IsPackable>true</IsPackable>
+    <PackageDescription>Provides types that can be used to model the structure of a source code document and to output source code for that model in a supported language.
+
+Commonly Used Types:
+System.CodeDom.CodeObject
+System.CodeDom.Compiler.CodeDomProvider
+Microsoft.CSharp.CSharpCodeProvider
+Microsoft.VisualBasic.VBCodeProvider</PackageDescription>
   </PropertyGroup>
   <!-- DesignTimeBuild requires all the TargetFramework Derived Properties to not be present in the first property group. -->
   <PropertyGroup>
diff --git a/src/libraries/System.Collections.Immutable/Directory.Build.props b/src/libraries/System.Collections.Immutable/Directory.Build.props
index d69948edcde51..e8d65546d0c80 100644
--- a/src/libraries/System.Collections.Immutable/Directory.Build.props
+++ b/src/libraries/System.Collections.Immutable/Directory.Build.props
@@ -2,24 +2,5 @@
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <StrongNameKeyId>Microsoft</StrongNameKeyId>
-    <PackageDescription>This package provides collections that are thread safe and guaranteed to never change their contents, also known as immutable collections. Like strings, any methods that perform modifications will not change the existing instance but instead return a new instance. For efficiency reasons, the implementation uses a sharing mechanism to ensure that newly created instances share as much data as possible with the previous instance while ensuring that operations have a predictable time complexity.
-
-Commonly Used Types:
-System.Collections.Immutable.ImmutableArray
-System.Collections.Immutable.ImmutableArray&lt;T&gt;
-System.Collections.Immutable.ImmutableDictionary
-System.Collections.Immutable.ImmutableDictionary&lt;TKey,TValue&gt;
-System.Collections.Immutable.ImmutableHashSet
-System.Collections.Immutable.ImmutableHashSet&lt;T&gt;
-System.Collections.Immutable.ImmutableList
-System.Collections.Immutable.ImmutableList&lt;T&gt;
-System.Collections.Immutable.ImmutableQueue
-System.Collections.Immutable.ImmutableQueue&lt;T&gt;
-System.Collections.Immutable.ImmutableSortedDictionary
-System.Collections.Immutable.ImmutableSortedDictionary&lt;TKey,TValue&gt;
-System.Collections.Immutable.ImmutableSortedSet
-System.Collections.Immutable.ImmutableSortedSet&lt;T&gt;
-System.Collections.Immutable.ImmutableStack
-System.Collections.Immutable.ImmutableStack&lt;T&gt;</PackageDescription>
   </PropertyGroup>
 </Project>
diff --git a/src/libraries/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj b/src/libraries/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
deleted file mode 100644
index 1db0e1915d389..0000000000000
--- a/src/libraries/System.Collections.Immutable/pkg/System.Collections.Immutable.pkgproj
+++ /dev/null
@@ -1,21 +0,0 @@
-<Project DefaultTargets="Build">
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
-  <ItemGroup>
-    <ProjectReference Include="..\src\System.Collections.Immutable.csproj">
-      <SupportedFramework>net461;netcoreapp2.0;uap10.0.16299;$(AllXamarinFrameworks)</SupportedFramework>
-    </ProjectReference>
-
-    <!-- Since UAP and .NETCoreApp are package based we still want to enable
-         OOBing libraries that happen to overlap with their framework package.
-         This avoids us having to lock the API in our NuGet packages just 
-         to match what shipped inbox: since we can provide a new library 
-         we can update it to add API without raising the netstandard version. -->
-    <ValidatePackageSuppression Include="TreatAsOutOfBox">
-      <Value>.NETCoreApp;UAP</Value>
-    </ValidatePackageSuppression>
-
-    <!-- Exclude TFMs that aren't supported by the package anymore from validation. -->
-    <ExcludeHarvestedSupportedFramework Include="netcoreapp1.0;netcoreapp1.1;netcore45;netcore451;netcore50;uap10.0;net45;net451;net46;wp8;wpa81" />
-  </ItemGroup>
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
-</Project>
\ No newline at end of file
diff --git a/src/libraries/System.Collections.Immutable/src/CompatibilitySuppressions.xml b/src/libraries/System.Collections.Immutable/src/CompatibilitySuppressions.xml
new file mode 100644
index 0000000000000..08e0aee4beb76
--- /dev/null
+++ b/src/libraries/System.Collections.Immutable/src/CompatibilitySuppressions.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <!-- .NETStandard,Version=v1.0, .NETStandard,Version=v1.3 and .NETPortable,Version=v0.0,Profile=Profile259 are intentionally dropped from the package. -->
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETStandard,Version=v1.0</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETStandard,Version=v1.3</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETPortable,Version=v0.0,Profile=Profile259</Target>
+  </Suppression>
+</Suppressions>
\ No newline at end of file
diff --git a/src/libraries/System.Collections.Immutable/src/System.Collections.Immutable.csproj b/src/libraries/System.Collections.Immutable/src/System.Collections.Immutable.csproj
index c9d746fd13b6b..bb1d513e04547 100644
--- a/src/libraries/System.Collections.Immutable/src/System.Collections.Immutable.csproj
+++ b/src/libraries/System.Collections.Immutable/src/System.Collections.Immutable.csproj
@@ -2,6 +2,26 @@
   <PropertyGroup>
     <TargetFrameworks>$(NetCoreAppCurrent);netstandard2.0;net461</TargetFrameworks>
     <Nullable>enable</Nullable>
+    <IsPackable>true</IsPackable>
+    <PackageDescription>This package provides collections that are thread safe and guaranteed to never change their contents, also known as immutable collections. Like strings, any methods that perform modifications will not change the existing instance but instead return a new instance. For efficiency reasons, the implementation uses a sharing mechanism to ensure that newly created instances share as much data as possible with the previous instance while ensuring that operations have a predictable time complexity.
+
+Commonly Used Types:
+System.Collections.Immutable.ImmutableArray
+System.Collections.Immutable.ImmutableArray&lt;T&gt;
+System.Collections.Immutable.ImmutableDictionary
+System.Collections.Immutable.ImmutableDictionary&lt;TKey,TValue&gt;
+System.Collections.Immutable.ImmutableHashSet
+System.Collections.Immutable.ImmutableHashSet&lt;T&gt;
+System.Collections.Immutable.ImmutableList
+System.Collections.Immutable.ImmutableList&lt;T&gt;
+System.Collections.Immutable.ImmutableQueue
+System.Collections.Immutable.ImmutableQueue&lt;T&gt;
+System.Collections.Immutable.ImmutableSortedDictionary
+System.Collections.Immutable.ImmutableSortedDictionary&lt;TKey,TValue&gt;
+System.Collections.Immutable.ImmutableSortedSet
+System.Collections.Immutable.ImmutableSortedSet&lt;T&gt;
+System.Collections.Immutable.ImmutableStack
+System.Collections.Immutable.ImmutableStack&lt;T&gt;</PackageDescription>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Properties\InternalsVisibleTo.cs" />
@@ -84,9 +104,6 @@
              Link="Common\System\Runtime\Versioning\NonVersionableAttribute.cs" />
     <None Include="Interfaces.cd" />
   </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="$(LibrariesProjectRoot)System.Runtime.CompilerServices.Unsafe\src\System.Runtime.CompilerServices.Unsafe.ilproj" />
-  </ItemGroup>
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETCoreApp'">
     <Reference Include="System.Collections" />
     <Reference Include="System.Diagnostics.Contracts" />
@@ -100,6 +117,9 @@
     <Reference Include="System.Runtime.InteropServices" />
     <Reference Include="System.Threading" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(LibrariesProjectRoot)System.Runtime.CompilerServices.Unsafe\src\System.Runtime.CompilerServices.Unsafe.ilproj" />
+  </ItemGroup>
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' != '.NETCoreApp'">
     <PackageReference Include="System.Memory"  Version="$(SystemMemoryVersion)" />
   </ItemGroup>
diff --git a/src/libraries/System.Configuration.ConfigurationManager/Directory.Build.props b/src/libraries/System.Configuration.ConfigurationManager/Directory.Build.props
index 844af4fbfc939..4784967b7f86a 100644
--- a/src/libraries/System.Configuration.ConfigurationManager/Directory.Build.props
+++ b/src/libraries/System.Configuration.ConfigurationManager/Directory.Build.props
@@ -4,10 +4,5 @@
     <StrongNameKeyId>Open</StrongNameKeyId>
     <IncludePlatformAttributes>true</IncludePlatformAttributes>
     <UnsupportedOSPlatforms>browser</UnsupportedOSPlatforms>
-    <PackageDescription>Provides types that support using configuration files.
-
-Commonly Used Types:
-System.Configuration.Configuration
-System.Configuration.ConfigurationManager</PackageDescription>
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/src/libraries/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj b/src/libraries/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
deleted file mode 100644
index b7c0493a0789c..0000000000000
--- a/src/libraries/System.Configuration.ConfigurationManager/pkg/System.Configuration.ConfigurationManager.pkgproj
+++ /dev/null
@@ -1,10 +0,0 @@
-<Project DefaultTargets="Build">
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
-  <ItemGroup>
-    <ProjectReference Include="..\ref\System.Configuration.ConfigurationManager.csproj">
-      <SupportedFramework>netcoreapp2.0;net461;uap10.0.16299;$(AllXamarinFrameworks)</SupportedFramework>
-    </ProjectReference>
-    <ProjectReference Include="..\src\System.Configuration.ConfigurationManager.csproj" />
-  </ItemGroup>
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
-</Project>
\ No newline at end of file
diff --git a/src/libraries/System.Configuration.ConfigurationManager/src/CompatibilitySuppressions.xml b/src/libraries/System.Configuration.ConfigurationManager/src/CompatibilitySuppressions.xml
new file mode 100644
index 0000000000000..8604e697147b8
--- /dev/null
+++ b/src/libraries/System.Configuration.ConfigurationManager/src/CompatibilitySuppressions.xml
@@ -0,0 +1,982 @@
+<?xml version="1.0"?>
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <!-- These types are forwarded on net461 https://github.com/dotnet/sdk/issues/18203-->
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.UriIdnScope</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Drawing.Configuration.SystemDrawingSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.DictionarySectionHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.DpapiProtectedConfigurationProvider</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IConfigurationSystem</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IdnElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IPersistComponentSettings</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ApplicationSettingsBase</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ApplicationScopedSettingAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ApplicationSettingsGroup</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.AppSettingsReader</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.AppSettingsSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.CallbackValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.CallbackValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ClientSettingsSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.CommaDelimitedStringCollectionConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Configuration</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationAllowDefinition</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationAllowExeDefinition</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationCollectionAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationConverterBase</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationElementCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationElementCollectionType</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationElementProperty</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationErrorsException</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationException</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationFileMap</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationLocation</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationLocationCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationLockCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationManager</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationProperty</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationPropertyAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationPropertyCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationPropertyOptions</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationSaveMode</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationSectionCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationSectionGroup</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationSectionGroupCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationSettings</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationUserLevel</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigurationValidatorBase</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConfigXmlDocument</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConnectionStringSettings</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConnectionStringSettingsCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ConnectionStringsSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ContextInformation</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.DefaultSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.DefaultSettingValueAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.DefaultValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ElementInformation</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ExeConfigurationFileMap</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ExeContext</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.GenericEnumConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IApplicationSettingsProvider</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IConfigurationSectionHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IgnoreSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IgnoreSectionHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.InfiniteIntConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.InfiniteTimeSpanConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IntegerValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IntegerValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.IriParsingElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ISettingsProviderService</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.KeyValueConfigurationCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.KeyValueConfigurationElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.LocalFileSettingsProvider</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.LongValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.LongValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.NameValueConfigurationCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.NameValueConfigurationElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.NameValueFileSectionHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.NameValueSectionHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.OverrideMode</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.PositiveTimeSpanValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.PositiveTimeSpanValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.PropertyInformation</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.PropertyInformationCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.PropertyValueOrigin</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ProtectedConfiguration</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ProtectedConfigurationProvider</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ProtectedConfigurationProviderCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ProtectedConfigurationSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ProtectedProviderSettings</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ProviderSettings</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ProviderSettingsCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.RegexStringValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.RegexStringValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.RsaProtectedConfigurationProvider</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SchemeSettingElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SchemeSettingElementCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SectionInformation</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingChangingEventArgs</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingChangingEventHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingElementCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsAttributeDictionary</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsBase</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsContext</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsDescriptionAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsGroupDescriptionAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsGroupNameAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsLoadedEventArgs</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsLoadedEventHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsManageability</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsManageabilityAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsPropertyCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsPropertyIsReadOnlyException</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsPropertyNotFoundException</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsPropertyValueCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsPropertyWrongTypeException</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsProvider</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsProviderAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsProviderCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsSavingEventHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsSerializeAsAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingValueElement</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SingleTagSectionHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SpecialSetting</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SpecialSettingAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.CommaDelimitedStringCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.StringValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.StringValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SubclassTypeValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SubclassTypeValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.TimeSpanMinutesConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.TimeSpanMinutesOrInfiniteConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.TimeSpanSecondsConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.TimeSpanSecondsOrInfiniteConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.TimeSpanValidator</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.TimeSpanValidatorAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.TypeNameConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.UriSection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.UserScopedSettingAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.UserSettingsGroup</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.ValidatorCallback</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.WhiteSpaceTrimStringConverter</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsProperty</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsPropertyValue</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.SettingsSerializeAs</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.NoSettingsVersionUpgradeAttribute</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Provider.ProviderBase</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Provider.ProviderCollection</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Provider.ProviderException</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.DelegatingConfigHost</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IConfigErrorInfo</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IConfigSystem</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IConfigurationManagerHelper</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IConfigurationManagerInternal</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IInternalConfigClientHost</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IInternalConfigConfigurationFactory</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IInternalConfigHost</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IInternalConfigRecord</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IInternalConfigRoot</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IInternalConfigSettingsFactory</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.IInternalConfigSystem</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.InternalConfigEventArgs</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.InternalConfigEventHandler</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.Configuration.Internal.StreamChangeCallback</Target>
+    <Left>lib/netstandard2.0/System.Configuration.ConfigurationManager.dll</Left>
+    <Right>lib/net461/System.Configuration.ConfigurationManager.dll</Right>
+  </Suppression>
+</Suppressions>
\ No newline at end of file
diff --git a/src/libraries/System.Configuration.ConfigurationManager/src/System.Configuration.ConfigurationManager.csproj b/src/libraries/System.Configuration.ConfigurationManager/src/System.Configuration.ConfigurationManager.csproj
index 209d36e49c51b..7b1669a2b426b 100644
--- a/src/libraries/System.Configuration.ConfigurationManager/src/System.Configuration.ConfigurationManager.csproj
+++ b/src/libraries/System.Configuration.ConfigurationManager/src/System.Configuration.ConfigurationManager.csproj
@@ -4,6 +4,12 @@
     <!-- opt-out of trimming until it works https://github.com/dotnet/runtime/issues/49062 -->
     <SetIsTrimmable>false</SetIsTrimmable>
     <NoWarn>$(NoWarn);CA1847</NoWarn>
+    <IsPackable>true</IsPackable>
+   <PackageDescription>Provides types that support using configuration files.
+
+Commonly Used Types:
+System.Configuration.Configuration
+System.Configuration.ConfigurationManager</PackageDescription>
   </PropertyGroup>
   <!-- DesignTimeBuild requires all the TargetFramework Derived Properties to not be present in the first property group. -->
   <PropertyGroup>
@@ -283,9 +289,12 @@
     <Reference Include="System.Xml.ReaderWriter" />
     <Reference Include="System.Xml.XmlSerializer" />
   </ItemGroup>
+  <!-- Since this package is compatible with .NETStandard, it must also ensure its .NETFramework behavior is compatible with its .NETStandard behavior.-->
+  <ItemGroup>
+    <ProjectReference Include="$(LibrariesProjectRoot)System.Security.Permissions\src\System.Security.Permissions.csproj" />
+  </ItemGroup>
   <ItemGroup Condition="'$(IsPartialFacadeAssembly)' != 'true'">
     <ProjectReference Include="$(LibrariesProjectRoot)System.Security.Cryptography.ProtectedData\src\System.Security.Cryptography.ProtectedData.csproj" />
-    <ProjectReference Include="$(LibrariesProjectRoot)System.Security.Permissions\src\System.Security.Permissions.csproj" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net461'">
     <Reference Include="System.Configuration" />
diff --git a/src/libraries/System.IO.Packaging/Directory.Build.props b/src/libraries/System.IO.Packaging/Directory.Build.props
index e1830e4026c15..63f02a0f817ef 100644
--- a/src/libraries/System.IO.Packaging/Directory.Build.props
+++ b/src/libraries/System.IO.Packaging/Directory.Build.props
@@ -2,6 +2,5 @@
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <StrongNameKeyId>Microsoft</StrongNameKeyId>
-    <PackageDescription>Provides classes that support storage of multiple data objects in a single container.</PackageDescription>
   </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/src/libraries/System.IO.Packaging/pkg/System.IO.Packaging.pkgproj b/src/libraries/System.IO.Packaging/pkg/System.IO.Packaging.pkgproj
deleted file mode 100644
index 14c8ca9ff74c9..0000000000000
--- a/src/libraries/System.IO.Packaging/pkg/System.IO.Packaging.pkgproj
+++ /dev/null
@@ -1,14 +0,0 @@
-<Project DefaultTargets="Build">
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.props))" />
-  <ItemGroup>
-    <ProjectReference Include="..\ref\System.IO.Packaging.csproj">
-      <SupportedFramework>net461;netcoreapp2.0;uap10.0.16299;$(AllXamarinFrameworks)</SupportedFramework>
-    </ProjectReference>
-    <ProjectReference Include="..\src\System.IO.Packaging.csproj" />
-
-    <!-- Exclude TFMs that aren't supported by the package anymore from validation. -->
-    <ExcludeHarvestedSupportedFramework Include="netcoreapp1.0;netcoreapp1.1;netcore50;uap10.0;net46" />
-    <NETStandardCompatError Include="netcoreapp2.0" Supported="$(NetCoreAppMinimum)" />
-  </ItemGroup>
-  <Import Project="$([MSBuild]::GetPathOfFileAbove(Directory.Build.targets))" />
-</Project>
\ No newline at end of file
diff --git a/src/libraries/System.IO.Packaging/src/CompatibilitySuppressions.xml b/src/libraries/System.IO.Packaging/src/CompatibilitySuppressions.xml
new file mode 100644
index 0000000000000..0209c79dd6d6f
--- /dev/null
+++ b/src/libraries/System.IO.Packaging/src/CompatibilitySuppressions.xml
@@ -0,0 +1,103 @@
+<?xml version="1.0"?>
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <!-- These types are forwarded on net461 https://github.com/dotnet/sdk/issues/18203-->
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.FileFormatException</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.CompressionOption</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.EncryptionOption</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.Package</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackagePart</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackagePartCollection</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackageProperties</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackageRelationship</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackageRelationshipCollection</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackageRelationshipSelector</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackageRelationshipSelectorType</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.PackUriHelper</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.TargetMode</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.ZipPackage</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0001</DiagnosticId>
+    <Target>T:System.IO.Packaging.ZipPackagePart</Target>
+    <Left>lib/netstandard2.0/System.IO.Packaging.dll</Left>
+    <Right>lib/net461/System.IO.Packaging.dll</Right>
+  </Suppression>
+  <!-- .NETStandard,Version=v1.3 and .NETFramework,Version=v4.6 are intentionally dropped from the package. -->
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETFramework,Version=v4.6</Target>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>.NETStandard,Version=v1.3</Target>
+  </Suppression>
+</Suppressions>
\ No newline at end of file
diff --git a/src/libraries/System.IO.Packaging/src/System.IO.Packaging.csproj b/src/libraries/System.IO.Packaging/src/System.IO.Packaging.csproj
index abb185806210a..7c8112e0d5b06 100644
--- a/src/libraries/System.IO.Packaging/src/System.IO.Packaging.csproj
+++ b/src/libraries/System.IO.Packaging/src/System.IO.Packaging.csproj
@@ -3,6 +3,8 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <TargetFrameworks>$(NetCoreAppCurrent);netstandard2.0;net461</TargetFrameworks>
     <Nullable>enable</Nullable>
+    <IsPackable>true</IsPackable>
+    <PackageDescription>Provides classes that support storage of multiple data objects in a single container.</PackageDescription>
     <!-- Suppress `string.Contains(char)` offers better performance than `string.Contains(string)` to avoid ifdefs.-->
     <NoWarn>$(NoWarn);CA1847</NoWarn>
   </PropertyGroup>
@@ -53,4 +55,8 @@
   <ItemGroup Condition="'$(TargetFramework)' == 'net461'">
     <Reference Include="WindowsBase" />
   </ItemGroup>
+
+  <ItemGroup>
+    <NETStandardCompatError Include="netcoreapp2.0" Supported="$(NetCoreAppMinimum)" />
+  </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/libraries/System.IO.Pipes.AccessControl/src/System.IO.Pipes.AccessControl.csproj b/src/libraries/System.IO.Pipes.AccessControl/src/System.IO.Pipes.AccessControl.csproj
index f43c090d0810b..677aa1ef3626c 100644
--- a/src/libraries/System.IO.Pipes.AccessControl/src/System.IO.Pipes.AccessControl.csproj
+++ b/src/libraries/System.IO.Pipes.AccessControl/src/System.IO.Pipes.AccessControl.csproj
@@ -16,6 +16,7 @@
       <SkipUseReferenceAssembly Condition="'$(TargetsWindows)' == 'true'">true</SkipUseReferenceAssembly>
     </ProjectReference>
     <ProjectReference Include="$(LibrariesProjectRoot)System.Security.AccessControl\src\System.Security.AccessControl.csproj" />
+    <ProjectReference Include="$(LibrariesProjectRoot)System.Security.Principal.Windows\src\System.Security.Principal.Windows.csproj" />
     <Reference Include="System.Runtime" />
   </ItemGroup>
 </Project>