diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index 48302dd29e..67f974626b 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -17,6 +17,11 @@
       <PreprocessorDefinitions>$(WinGetMacros)%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+    </ClCompile>
+  </ItemDefinitionGroup>
 
   <!-- For C# -->
   <PropertyGroup Condition="'$(WinGetMacros)' != ''">
diff --git a/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj b/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj
index 725e9caaaa..681e10da91 100644
--- a/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj
+++ b/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj
@@ -317,7 +317,7 @@
     <ClCompile Include="catalog.cpp" />
     <ClCompile Include="dllmain.cpp" />
     <ClCompile Include="typeresolution.cpp" />
-    <ClCompile Include="typeresolution.h" />
+    <ClInclude Include="typeresolution.h" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="catalog.h" />
diff --git a/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj.filters b/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj.filters
index 698d996c44..5e8d0ce801 100644
--- a/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj.filters
+++ b/src/Xlang/UndockedRegFreeWinRT/src/UndockedRegFreeWinRT/UndockedRegFreeWinRT/UndockedRegFreeWinRT.vcxproj.filters
@@ -28,9 +28,6 @@
     <ClCompile Include="dllmain.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="typeresolution.h">
-      <Filter>Header Files</Filter>
-    </ClCompile>
     <ClCompile Include="typeresolution.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -54,6 +51,9 @@
     <ClInclude Include="..\..\..\..\..\WinGetServer\Utils.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="typeresolution.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Natvis Include="$(MSBuildThisFileDirectory)..\..\natvis\wil.natvis" />