diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
index 99b5f8c..2ef5d4a 100644
--- a/Lib/test/test_capi.py
+++ b/Lib/test/test_capi.py
@@ -9,7 +9,6 @@
 import sys
 import time
 import unittest
-import textwrap
 from test import support
 try:
     import _posixsubprocess
@@ -219,15 +218,17 @@
         self.assertEqual(_testcapi.argparsing("Hello", "World"), 1)
 
 
-@unittest.skipIf(
-    sys.platform.startswith('win'),
-    "interpreter embedding tests aren't built under Windows")
 class EmbeddingTests(unittest.TestCase):
-    # XXX only tested under Unix checkouts
-
     def setUp(self):
         basepath = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
-        self.test_exe = exe = os.path.join(basepath, "Modules", "_testembed")
+        exename = "_testembed"
+        if sys.platform.startswith("win"):
+            ext = ("_d" if "_d" in sys.executable else "") + ".exe"
+            exename += ext
+            exepath = os.path.dirname(sys.executable)
+        else:
+            exepath = os.path.join(basepath, "Modules")
+        self.test_exe = exe = os.path.join(exepath, exename)
         if not os.path.exists(exe):
             self.skipTest("%r doesn't exist" % exe)
         # This is needed otherwise we get a fatal error:
@@ -260,6 +261,16 @@
             print(out)
             print(err)
 
+    @staticmethod
+    def _get_default_pipe_encoding():
+        rp, wp = os.pipe()
+        try:
+            with os.fdopen(wp, 'w') as w:
+                default_pipe_encoding = w.encoding
+        finally:
+            os.close(rp)
+        return default_pipe_encoding
+
     def test_forced_io_encoding(self):
         # Checks forced configuration of embedded interpreter IO streams
         out, err = self.run_embedded_interpreter("forced_io_encoding")
@@ -267,31 +278,34 @@
             print()
             print(out)
             print(err)
-        expected_output = textwrap.dedent("""\
-        --- Use defaults ---
-        Expected encoding: default
-        Expected errors: default
-        stdin: {0.__stdin__.encoding}:strict
-        stdout: {0.__stdout__.encoding}:strict
-        stderr: {0.__stderr__.encoding}:backslashreplace
-        --- Set errors only ---
-        Expected encoding: default
-        Expected errors: surrogateescape
-        stdin: {0.__stdin__.encoding}:surrogateescape
-        stdout: {0.__stdout__.encoding}:surrogateescape
-        stderr: {0.__stderr__.encoding}:backslashreplace
-        --- Set encoding only ---
-        Expected encoding: latin-1
-        Expected errors: default
-        stdin: latin-1:strict
-        stdout: latin-1:strict
-        stderr: latin-1:backslashreplace
-        --- Set encoding and errors ---
-        Expected encoding: latin-1
-        Expected errors: surrogateescape
-        stdin: latin-1:surrogateescape
-        stdout: latin-1:surrogateescape
-        stderr: latin-1:backslashreplace""").format(sys)
+        expected_stdin_encoding = sys.__stdin__.encoding
+        expected_pipe_encoding = self._get_default_pipe_encoding()
+        expected_output = os.linesep.join([
+        "--- Use defaults ---",
+        "Expected encoding: default",
+        "Expected errors: default",
+        "stdin: {0}:strict",
+        "stdout: {1}:strict",
+        "stderr: {1}:backslashreplace",
+        "--- Set errors only ---",
+        "Expected encoding: default",
+        "Expected errors: surrogateescape",
+        "stdin: {0}:surrogateescape",
+        "stdout: {1}:surrogateescape",
+        "stderr: {1}:backslashreplace",
+        "--- Set encoding only ---",
+        "Expected encoding: latin-1",
+        "Expected errors: default",
+        "stdin: latin-1:strict",
+        "stdout: latin-1:strict",
+        "stderr: latin-1:backslashreplace",
+        "--- Set encoding and errors ---",
+        "Expected encoding: latin-1",
+        "Expected errors: surrogateescape",
+        "stdin: latin-1:surrogateescape",
+        "stdout: latin-1:surrogateescape",
+        "stderr: latin-1:backslashreplace"]).format(expected_stdin_encoding,
+                                                    expected_pipe_encoding)
         # This is useful if we ever trip over odd platform behaviour
         self.maxDiff = None
         self.assertEqual(out.strip(), expected_output)
diff --git a/Misc/NEWS b/Misc/NEWS
index 3099b7f..c90093d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -153,6 +153,9 @@
 Tests
 -----
 
+- Issue #19439: interpreter embedding tests are now executed on Windows
+  (Patch by Zachary Ware)
+
 - Issue #19085: Added basic tests for all tkinter widget options.
 
 - Issue 19384: Fix test_py_compile for root user, patch by Claudiu Popa.
diff --git a/PCbuild/_testembed.vcxproj b/PCbuild/_testembed.vcxproj
new file mode 100644
index 0000000..83c7ad2
--- /dev/null
+++ b/PCbuild/_testembed.vcxproj
@@ -0,0 +1,161 @@
+﻿<?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="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>{6DAC66D9-E703-4624-BE03-49112AB5AA62}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>_testembed</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+    <Import Project="debug.props" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+    <Import Project="debug.props" />
+    <Import Project="x64.props" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+    <Import Project="x64.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\Modules\_testembed.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="pythoncore.vcxproj">
+      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
+      <Private>true</Private>
+      <ReferenceOutputAssembly>true</ReferenceOutputAssembly>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+      <LinkLibraryDependencies>true</LinkLibraryDependencies>
+      <UseLibraryDependencyInputs>false</UseLibraryDependencyInputs>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/PCbuild/_testembed.vcxproj.filters b/PCbuild/_testembed.vcxproj.filters
new file mode 100644
index 0000000..dea54d4
--- /dev/null
+++ b/PCbuild/_testembed.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\_testembed.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/PCbuild/pcbuild.sln b/PCbuild/pcbuild.sln
index fa86d9a..e431c91 100644
--- a/PCbuild/pcbuild.sln
+++ b/PCbuild/pcbuild.sln
@@ -78,6 +78,8 @@
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_overlapped", "_overlapped.vcxproj", "{EB6E69DD-04BF-4543-9B92-49FAABCEAC2E}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_testembed", "_testembed.vcxproj", "{6DAC66D9-E703-4624-BE03-49112AB5AA62}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -631,6 +633,22 @@
 		{254A0C05-6696-4B08-8CB2-EF7D533AEE01}.Release|Win32.Build.0 = Release|Win32
 		{254A0C05-6696-4B08-8CB2-EF7D533AEE01}.Release|x64.ActiveCfg = Release|x64
 		{254A0C05-6696-4B08-8CB2-EF7D533AEE01}.Release|x64.Build.0 = Release|x64
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Debug|Win32.ActiveCfg = Debug|Win32
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Debug|Win32.Build.0 = Debug|Win32
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Debug|x64.ActiveCfg = Debug|x64
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Debug|x64.Build.0 = Debug|x64
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{6DAC66D9-E703-4624-BE03-49112AB5AA62}.Release|Win32.ActiveCfg = Release|Win32
+		{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
 		{EB6E69DD-04BF-4543-9B92-49FAABCEAC2E}.Debug|Win32.ActiveCfg = Debug|Win32
 		{EB6E69DD-04BF-4543-9B92-49FAABCEAC2E}.Debug|Win32.Build.0 = Debug|Win32
 		{EB6E69DD-04BF-4543-9B92-49FAABCEAC2E}.Debug|x64.ActiveCfg = Debug|x64