diff --git a/Directory.Build.props b/Directory.Build.props
index 14a8d9d004bf..90b657484e81 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -38,11 +38,8 @@
     <ToolsetTargetFramework>$(SdkTargetFramework)</ToolsetTargetFramework>
     <VisualStudioServiceTargetFramework>net8.0</VisualStudioServiceTargetFramework>
 
-    <!-- VS for Mac may run on a lower version of .NET than the SDK is targeting, but needs to load the resolvers.  So the resolvers and dependencies
-         may target a lower version of .NET -->
-    <ResolverTargetFramework>net8.0</ResolverTargetFramework>
-    <!-- Source build does not need to worry about running on VS for Mac -->
-    <ResolverTargetFramework Condition="'$(DotNetBuildSourceOnly)' == 'true'">$(SdkTargetFramework)</ResolverTargetFramework>
+    <!-- We used to have scenarios where the MSBuild host (VSMac) had an older .NET, but don't any more. -->
+    <ResolverTargetFramework>$(SdkTargetFramework)</ResolverTargetFramework>
 
     <!-- NU1701 Disable implicit package target fallback, and disable warning for when we explicitly add it (currently needed for
          Microsoft.ApplicationInsights) -->
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index d80a564aea5c..93fb0b72f295 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -69,18 +69,18 @@
       <Sha>edf3e90fa25b1fc4f7f63ceb45ef70f49c6b121a</Sha>
       <SourceBuild RepoName="emsdk" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.Build" Version="17.12.0-preview-24407-03">
+    <Dependency Name="Microsoft.Build" Version="17.12.0-preview-24429-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>6bc91d5e2d3d8a199fdbe367ed015b55daf57046</Sha>
+      <Sha>01e53f4161996ce73408117d012f24c2c1737e58</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Localization" Version="17.12.0-preview-24407-03">
+    <Dependency Name="Microsoft.Build.Localization" Version="17.12.0-preview-24429-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>6bc91d5e2d3d8a199fdbe367ed015b55daf57046</Sha>
+      <Sha>01e53f4161996ce73408117d012f24c2c1737e58</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.0-preview-24407-03">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.msbuild" Version="17.12.0-preview-24429-01">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>6bc91d5e2d3d8a199fdbe367ed015b55daf57046</Sha>
+      <Sha>01e53f4161996ce73408117d012f24c2c1737e58</Sha>
       <SourceBuild RepoName="msbuild" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.FSharp.Compiler" Version="12.9.100-beta.24427.4">
diff --git a/eng/Versions.props b/eng/Versions.props
index 18c89b5250f7..be5e317800ff 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -215,8 +215,8 @@
          then use that in Directory.Packages.props.
 
          At usage sites, either we use MicrosoftBuildMinimumVersion, or MicrosoftBuildVersion in source-only modes. -->
-    <MicrosoftBuildVersion>17.12.0-preview-24407-03</MicrosoftBuildVersion>
-    <MicrosoftBuildLocalizationVersion>17.12.0-preview-24407-03</MicrosoftBuildLocalizationVersion>
+    <MicrosoftBuildVersion>17.12.0-preview-24429-01</MicrosoftBuildVersion>
+    <MicrosoftBuildLocalizationVersion>17.12.0-preview-24429-01</MicrosoftBuildLocalizationVersion>
     <MicrosoftBuildMinimumVersion Condition="Exists('$(RepoRoot)src\Layout\redist\minimumMSBuildVersion') and '$(DotNetBuildSourceOnly)' != 'true'">$([System.IO.File]::ReadAllText('$(RepoRoot)src\Layout\redist\minimumMSBuildVersion').Trim())</MicrosoftBuildMinimumVersion>
   </PropertyGroup>
   <PropertyGroup>
diff --git a/src/Cli/Microsoft.DotNet.Cli.Utils/Microsoft.DotNet.Cli.Utils.csproj b/src/Cli/Microsoft.DotNet.Cli.Utils/Microsoft.DotNet.Cli.Utils.csproj
index 94beec920221..71d901b852af 100644
--- a/src/Cli/Microsoft.DotNet.Cli.Utils/Microsoft.DotNet.Cli.Utils.csproj
+++ b/src/Cli/Microsoft.DotNet.Cli.Utils/Microsoft.DotNet.Cli.Utils.csproj
@@ -27,7 +27,7 @@
     for Mac and other VS scenarios. During source-build, we only have access to
     the latest version, which targets NetCurrent. -->
     <PropertyGroup>
-      <MSBuildPathInPackage>$(PkgMicrosoft_Build_Runtime)\contentFiles\any\net8.0\MSBuild.dll</MSBuildPathInPackage>
+      <MSBuildPathInPackage>$(PkgMicrosoft_Build_Runtime)\contentFiles\any\net9.0\MSBuild.dll</MSBuildPathInPackage>
       <MSBuildPathInPackage Condition="'$(DotNetBuildSourceOnly)' == 'true' and !Exists($(MSBuildPathInPackage))">$(PkgMicrosoft_Build_Runtime)\contentFiles\any\$(NetCurrent)\MSBuild.dll</MSBuildPathInPackage>
     </PropertyGroup>
     <Error Condition="!Exists('$(MSBuildPathInPackage)')" Text="Something moved around in Microsoft.Build.Runtime, adjust code here accordingly." />