diff --git a/src/QsCompiler/CompilationManager/CompilationUnitManager.cs b/src/QsCompiler/CompilationManager/CompilationUnitManager.cs
index 8dc0e3f635..2cda5999be 100644
--- a/src/QsCompiler/CompilationManager/CompilationUnitManager.cs
+++ b/src/QsCompiler/CompilationManager/CompilationUnitManager.cs
@@ -145,14 +145,34 @@ public void Dispose()
         // routines related to tracking the source files
 
         /// <summary>
-        /// Returns the string with the file ID associated with the given URI used throughout the compilation.
+        /// Converts a URI into the file ID used during compilation if the URI is an absolute file URI. 
         /// </summary>
-        public static bool TryGetFileId(Uri uri, out NonNullable<string> id)
+        /// <exception cref="ArgumentNullException">Thrown if the URI is null.</exception>
+        /// <exception cref="ArgumentException">Thrown if the URI is not an absolute URI or not a file URI.</exception>
+        public static NonNullable<string> GetFileId(Uri uri) =>
+            uri is null
+                ? throw new ArgumentNullException(nameof(uri))
+                : TryGetFileId(uri, out var fileId)
+                ? fileId
+                : throw new ArgumentException("The URI is not an absolute file URI.", nameof(uri));
+
+        /// <summary>
+        /// Converts a URI into the file ID used during compilation if the URI is an absolute file URI. 
+        /// </summary>
+        /// <returns>True if converting the URI to a file ID succeeded.</returns>
+        [Obsolete("Use GetFileId instead after ensuring that the URI is an absolute file URI.")]
+        public static bool TryGetFileId(Uri uri, out NonNullable<string> fileId)
         {
-            id = NonNullable<string>.New("");
-            if (uri == null || !uri.IsFile || !uri.IsAbsoluteUri) return false;
-            id = NonNullable<string>.New(uri.IsUnc ? uri.LocalPath : uri.AbsolutePath);
-            return true;
+            if (!(uri is null) && uri.IsFile && uri.IsAbsoluteUri)
+            {
+                fileId = NonNullable<string>.New(uri.LocalPath);
+                return true;
+            }
+            else
+            {
+                fileId = default;
+                return false;
+            }
         }
 
         /// <summary>
diff --git a/src/QsCompiler/TestTargets/Libraries/Library1/Library1.csproj b/src/QsCompiler/TestTargets/Libraries/Library1/Library1.csproj
index 0fd94350fe..c29fbc8350 100644
--- a/src/QsCompiler/TestTargets/Libraries/Library1/Library1.csproj
+++ b/src/QsCompiler/TestTargets/Libraries/Library1/Library1.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Quantum.Simulators" Version="0.11.2006.2118-beta" />
+    <PackageReference Include="Microsoft.Quantum.Simulators" Version="0.11.2006.2409-alpha" />
   </ItemGroup>
 
   <Import Project="$(MSBuildThisFileDirectory)../build/Library.props"/>
diff --git a/src/QsCompiler/TestTargets/Libraries/Library2/Library2.csproj b/src/QsCompiler/TestTargets/Libraries/Library2/Library2.csproj
index 40d3dae54b..2a7c71b7d2 100644
--- a/src/QsCompiler/TestTargets/Libraries/Library2/Library2.csproj
+++ b/src/QsCompiler/TestTargets/Libraries/Library2/Library2.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Quantum.Simulators" Version="0.11.2006.2118-beta" />
+    <PackageReference Include="Microsoft.Quantum.Simulators" Version="0.11.2006.2409-alpha" />
   </ItemGroup>
 
   <Import Project="$(MSBuildThisFileDirectory)../build/Library.props"/>
diff --git a/src/QsCompiler/TestTargets/Simulation/Target/Simulation.csproj b/src/QsCompiler/TestTargets/Simulation/Target/Simulation.csproj
index 7359dc8a41..6b5cd19d8c 100644
--- a/src/QsCompiler/TestTargets/Simulation/Target/Simulation.csproj
+++ b/src/QsCompiler/TestTargets/Simulation/Target/Simulation.csproj
@@ -13,7 +13,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Quantum.CsharpGeneration" Version="0.11.2006.2118-beta" />
+    <PackageReference Include="Microsoft.Quantum.CsharpGeneration" Version="0.11.2006.2409-alpha" />
   </ItemGroup>
 
 </Project>
diff --git a/src/QsCompiler/Tests.Compiler/SerializationTests.fs b/src/QsCompiler/Tests.Compiler/SerializationTests.fs
index c48e8f233d..b8d546cd6b 100644
--- a/src/QsCompiler/Tests.Compiler/SerializationTests.fs
+++ b/src/QsCompiler/Tests.Compiler/SerializationTests.fs
@@ -35,9 +35,8 @@ module SerializationTests =
 
     open System
     open System.Collections.Immutable
-    open System.IO;
     open System.Reflection
-    open System.Reflection.PortableExecutable;
+    open System.Web
     open Microsoft.Quantum.QsCompiler
     open Microsoft.Quantum.QsCompiler.CompilationBuilder
     open Microsoft.Quantum.QsCompiler.DataTypes
@@ -261,7 +260,8 @@ module SerializationTests =
         let specs = attrs.Specializations |> Seq.map (fun s -> (s.ToTuple() |> fst).ToJson()) |> Seq.toList
         let AssertEqual (expected : string list) (got : _ list) = 
             Assert.Equal(expected.Length, got.Length)
-            expected |> List.iteri (fun i ex -> Assert.Equal (ex.Replace("%%%", dllId.Value), got.[i]))
+            expected |> List.iteri (fun i ex ->
+                Assert.Equal (ex.Replace("%%%", HttpUtility.JavaScriptStringEncode dllId.Value), got.[i]))
         AssertEqual [CALLABLE_1; CALLABLE_2; CALLABLE_3] callables
         AssertEqual [SPECIALIZATION_1; SPECIALIZATION_3] specs
         AssertEqual [TYPE_1] types
@@ -275,6 +275,3 @@ module SerializationTests =
     [<assembly: Attributes.CallableDeclaration(CALLABLE_3)>]
     [<assembly: Attributes.SpecializationDeclaration(SPECIALIZATION_3)>]
     do ()
-
-
-