diff --git a/PCbuild/_testmultiphase.vcxproj b/PCbuild/_testmultiphase.vcxproj
new file mode 100644
index 00000000000..647b38029de
--- /dev/null
+++ b/PCbuild/_testmultiphase.vcxproj
@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|Win32">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|x64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|Win32">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|x64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{16BFE6F0-22EF-40B5-B831-7E937119EF10}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>_testmultiphase</RootNamespace>
+    <SupportPGO>false</SupportPGO>
+  </PropertyGroup>
+  <Import Project="python.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <CharacterSet>NotSet</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <PropertyGroup>
+    <TargetExt>.pyd</TargetExt>
+  </PropertyGroup>
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\Modules\_testmultiphase.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="pythoncore.vcxproj">
+      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/PCbuild/_testmultiphase.vcxproj.filters b/PCbuild/_testmultiphase.vcxproj.filters
new file mode 100644
index 00000000000..0c25101e1b4
--- /dev/null
+++ b/PCbuild/_testmultiphase.vcxproj.filters
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\Modules\_testmultiphase.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/PCbuild/pcbuild.proj b/PCbuild/pcbuild.proj
index 9cf1072fe19..813831e3a46 100644
--- a/PCbuild/pcbuild.proj
+++ b/PCbuild/pcbuild.proj
@@ -46,7 +46,7 @@
     <ExtensionModules Include="_ssl;_hashlib" Condition="$(IncludeSSL)" />
     <Projects Include="@(ExtensionModules->'%(Identity).vcxproj')" Condition="$(IncludeExtensions)" />
     <!-- Test modules -->
-    <TestModules Include="_ctypes_test;_testbuffer;_testcapi;_testembed;_testimportmultiple" />
+    <TestModules Include="_ctypes_test;_testbuffer;_testcapi;_testembed;_testimportmultiple;_testmultiphase" />
     <TestModules Include="xxlimited" Condition="'$(Configuration)' == 'Release'" />
     <Projects Include="@(TestModules->'%(Identity).vcxproj')" Condition="$(IncludeTests)">
       <!-- Disable parallel build for test modules -->
diff --git a/PCbuild/pcbuild.sln b/PCbuild/pcbuild.sln
index b03cf108bfc..766a870684e 100644
--- a/PCbuild/pcbuild.sln
+++ b/PCbuild/pcbuild.sln
@@ -72,6 +72,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_overlapped", "_overlapped.
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testembed", "_testembed.vcxproj", "{6DAC66D9-E703-4624-BE03-49112AB5AA62}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testmultiphase", "_testmultiphase.vcxproj", "{16BFE6F0-22EF-40B5-B831-7E937119EF10}"
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "tcl", "tcl.vcxproj", "{B5FD6F1D-129E-4BFF-9340-03606FAC7283}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "tix", "tix.vcxproj", "{C5A3E7FB-9695-4B2E-960B-1D9F43F1E555}"
@@ -588,6 +590,20 @@ Global
 		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Release|Win32.Build.0 = Release|Win32
 		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Release|x64.ActiveCfg = Release|x64
 		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Release|x64.Build.0 = Release|x64
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Debug|Win32.ActiveCfg = Debug|Win32
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Debug|Win32.Build.0 = Debug|Win32
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Debug|x64.ActiveCfg = Debug|x64
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Debug|x64.Build.0 = Debug|x64
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.PGInstrument|Win32.ActiveCfg = Release|Win32
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.PGInstrument|x64.ActiveCfg = Release|x64
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.PGUpdate|Win32.ActiveCfg = Release|Win32
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.PGUpdate|Win32.Build.0 = Release|Win32
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.PGUpdate|x64.ActiveCfg = Release|x64
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.PGUpdate|x64.Build.0 = Release|x64
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Release|Win32.ActiveCfg = Release|Win32
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Release|Win32.Build.0 = Release|Win32
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Release|x64.ActiveCfg = Release|x64
+		{16BFE6F0-22EF-40B5-B831-7E937119EF10}.Release|x64.Build.0 = Release|x64
 		{B5FD6F1D-129E-4BFF-9340-03606FAC7283}.Debug|Win32.ActiveCfg = Debug|Win32
 		{B5FD6F1D-129E-4BFF-9340-03606FAC7283}.Debug|Win32.Build.0 = Debug|Win32
 		{B5FD6F1D-129E-4BFF-9340-03606FAC7283}.Debug|x64.ActiveCfg = Debug|x64
diff --git a/Tools/msi/test/test_files.wxs b/Tools/msi/test/test_files.wxs
index 2d5f593344c..e803aa0f554 100644
--- a/Tools/msi/test/test_files.wxs
+++ b/Tools/msi/test/test_files.wxs
@@ -14,6 +14,9 @@
             <Component Id="_testimportmultiple.pyd" Directory="DLLs" Guid="*">
                 <File Id="_testimportmultiple.pyd" Name="_testimportmultiple.pyd" KeyPath="yes" />
             </Component>
+            <Component Id="_testmultiphase.pyd" Directory="DLLs" Guid="*">
+                <File Id="_testmultiphase.pyd" Name="_testmultiphase.pyd" KeyPath="yes" />
+            </Component>
         </ComponentGroup>
     </Fragment>
     
@@ -31,6 +34,9 @@
             <Component Id="_testimportmultiple.pdb" Directory="DLLs" Guid="*">
                 <File Id="_testimportmultiple.pdb" Name="_testimportmultiple.pdb" />
             </Component>
+            <Component Id="_testmultiphase.pdb" Directory="DLLs" Guid="*">
+                <File Id="_testmultiphase.pdb" Name="_testmultiphase.pdb" />
+            </Component>
         </ComponentGroup>
     </Fragment>
     
@@ -48,6 +54,9 @@
             <Component Id="_testimportmultiple_d.pyd" Directory="DLLs" Guid="*">
                 <File Id="_testimportmultiple_d.pyd" Name="_testimportmultiple_d.pyd" />
             </Component>
+            <Component Id="_testmultiphase_d.pyd" Directory="DLLs" Guid="*">
+                <File Id="_testmultiphase_d.pyd" Name="_testmultiphase_d.pyd" />
+            </Component>
             <Component Id="_testcapi_d.pdb" Directory="DLLs" Guid="*">
                 <File Id="_testcapi_d.pdb" Name="_testcapi_d.pdb" />
             </Component>
@@ -60,6 +69,9 @@
             <Component Id="_testimportmultiple_d.pdb" Directory="DLLs" Guid="*">
                 <File Id="_testimportmultiple_d.pdb" Name="_testimportmultiple_d.pdb" />
             </Component>
+            <Component Id="_testmultiphase_d.pdb" Directory="DLLs" Guid="*">
+                <File Id="_testmultiphase_d.pdb" Name="_testmultiphase_d.pdb" />
+            </Component>
         </ComponentGroup>
     </Fragment>
 </Wix>