diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/FileRow.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/FileRow.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/FileRow.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/FileRow.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateManifestMsi.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateManifestMsi.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateManifestMsi.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateManifestMsi.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsi.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsi.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsi.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsi.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsiBase.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsiBase.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsiBase.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateMsiBase.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioMsiPackageProject.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioMsiPackageProject.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioMsiPackageProject.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioMsiPackageProject.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioWorkload.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioWorkload.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioWorkload.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateVisualStudioWorkload.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateWorkloadMsis.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateWorkloadMsis.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateWorkloadMsis.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/GenerateWorkloadMsis.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/Microsoft.DotNet.Build.Tasks.Workloads.csproj b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/Microsoft.DotNet.Build.Tasks.Workloads.csproj
index 19cf67b52d7..2d02b7f41c6 100644
--- a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/Microsoft.DotNet.Build.Tasks.Workloads.csproj
+++ b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/Microsoft.DotNet.Build.Tasks.Workloads.csproj
@@ -11,6 +11,16 @@
     <NoWarn>$(NoWarn);NU5127</NoWarn>
     <EnableDefaultNoneItems>false</EnableDefaultNoneItems>
     <RootNamespace>Microsoft.DotNet.Build.Tasks.Workloads</RootNamespace>
+
+    <!--
+      Only include WiX-powered features when running a non-from-source build. (For example, the
+      Microsoft build used to build .NET for Windows.)
+
+      This removes a dependency on prebuilt WiX binaries. The purpose of WiX is to produce Windows
+      installers, and source-build doesn't run on Windows, so excluding WiX while building in
+      source-build mode to remove the prebuilt dependency has no impact to available .NET features.
+    -->
+    <IncludeWiX Condition="'$(DotNetBuildFromSource)' != 'true'">true</IncludeWiX>
   </PropertyGroup>
 
   <ItemGroup>
@@ -19,13 +29,16 @@
     <PackageReference Include="Microsoft.Build.Tasks.Core" Version="$(MicrosoftBuildTasksCoreVersion)" />
     <PackageReference Include="Microsoft.Build.Framework" Version="$(MicrosoftBuildFrameworkVersion)" />
     <PackageReference Include="NuGet.Packaging" Version="$(NuGetVersion)" />
-    <PackageReference Include="Wix" Version="3.11.2" />
     <PackageReference Include="Microsoft.NET.Sdk.WorkloadManifestReader" Version="$(MicrosoftNetSdkWorkloadManifestReaderVersion)" />
-    <PackageReference Include="System.Text.Json" Version="$(SystemTextJsonVersion)" Condition="'$(TargetFramework)' == 'net472'"/>
+    <PackageReference Include="System.Text.Json" Version="$(SystemTextJsonVersion)" Condition="'$(TargetFramework)' == 'net472'" />
     <PackageReference Include="Microsoft.Deployment.DotNet.Releases" Version="$(MicrosoftDeploymentDotNetReleasesVersion)" />
   </ItemGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition="'$(IncludeWiX)' == 'true'">
+    <PackageReference Include="Wix" Version="3.11.2" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(IncludeWiX)' == 'true'">
     <Reference Include="$(WixInstallPath)\Microsoft.Deployment.Resources.dll" />
     <Reference Include="$(WixInstallPath)\Microsoft.Deployment.Compression.dll" />
     <Reference Include="$(WixInstallPath)\Microsoft.Deployment.Compression.Cab.dll" />
@@ -48,6 +61,10 @@
     <EmbeddedResource Remove="obj\**" />
   </ItemGroup>
 
+  <ItemGroup Condition="'$(IncludeWiX)' != 'true'">
+    <Compile Remove="**\*.wix.cs" />
+  </ItemGroup>
+
   <ItemGroup>
     <EmbeddedResource Include="Misc\*.*" />
     <EmbeddedResource Include="MsiTemplate\*.wxs" />
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiProperties.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiProperties.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiProperties.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiProperties.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiUtils.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiUtils.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiUtils.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/MsiUtils.wix.cs
diff --git a/src/Microsoft.DotNet.Build.Tasks.Workloads/src/RelatedProduct.cs b/src/Microsoft.DotNet.Build.Tasks.Workloads/src/RelatedProduct.wix.cs
similarity index 100%
rename from src/Microsoft.DotNet.Build.Tasks.Workloads/src/RelatedProduct.cs
rename to src/Microsoft.DotNet.Build.Tasks.Workloads/src/RelatedProduct.wix.cs