diff --git a/PCbuild/pcbuild.proj b/PCbuild/pcbuild.proj
index 36621c910cd..a66184896ad 100644
--- a/PCbuild/pcbuild.proj
+++ b/PCbuild/pcbuild.proj
@@ -33,8 +33,6 @@
     <Projects Include="pythoncore.vcxproj">
       <BuildInParallel>false</BuildInParallel>
     </Projects>
-    <!-- python[w].exe -->
-    <Projects Include="python.vcxproj;pythonw.vcxproj" />
     <!-- python3.dll -->
     <Projects Include="python3dll.vcxproj" />
     <!-- py[w].exe -->
@@ -58,12 +56,18 @@
       <!-- Disable parallel build for test modules -->
       <BuildInParallel>false</BuildInParallel>
     </Projects>
+    
+    <!-- python[w].exe -->
+    <Projects Include="python.vcxproj;pythonw.vcxproj">
+      <BuildInParallel>false</BuildInParallel>
+    </Projects>
   </ItemGroup>
 
   <Target Name="Build">
     <MSBuild Projects="@(Projects)"
              Properties="Configuration=%(Configuration);Platform=%(Platform);%(Properties)"
              BuildInParallel="%(BuildInParallel)"
+             StopOnFirstFailure="true"
              Targets="%(BuildTarget)" />
   </Target>
 
diff --git a/PCbuild/python3dll.vcxproj b/PCbuild/python3dll.vcxproj
index cbb618f283c..c66c8ef141a 100644
--- a/PCbuild/python3dll.vcxproj
+++ b/PCbuild/python3dll.vcxproj
@@ -58,6 +58,7 @@
     <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
     <_Machine>X86</_Machine>
     <_Machine Condition="$(Platform) == 'x64'">X64</_Machine>
+    <ExtensionsToDeleteOnClean>$(ExtensionsToDeleteOnClean);$(IntDir)python3_d.def;$(IntDir)python3stub.def</ExtensionsToDeleteOnClean>
   </PropertyGroup>
   <ItemDefinitionGroup>
     <ClCompile>
@@ -133,9 +134,4 @@
     <MakeDir Directories="$(IntDir)" />
     <WriteLinesToFile File="$(IntDir)python3stub.def" Lines="@(_Lines)" Overwrite="true" />
   </Target>
-  <Target Name="_CleanStubDef" BeforeTargets="CoreClean">
-    <ItemGroup>
-      <Clean Include="$(IntDir)python3stub.def" />
-    </ItemGroup>
-  </Target>
 </Project>
\ No newline at end of file