diff --git a/WindowsAppRuntime.sln b/WindowsAppRuntime.sln
index b92522dc44..030712d2d3 100644
--- a/WindowsAppRuntime.sln
+++ b/WindowsAppRuntime.sln
@@ -1095,28 +1095,32 @@ Global
 		{6539E9E1-BF36-40E5-86BC-070E99DB7B7B}.Release|x86.Build.0 = Release|Win32
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|Any CPU.ActiveCfg = Debug|Win32
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|ARM.ActiveCfg = Debug|Win32
-		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|ARM64.ActiveCfg = Debug|Win32
+		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|ARM64.Build.0 = Debug|ARM64
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|x64.ActiveCfg = Debug|x64
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|x64.Build.0 = Debug|x64
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|x86.ActiveCfg = Debug|Win32
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Debug|x86.Build.0 = Debug|Win32
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|Any CPU.ActiveCfg = Release|Win32
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|ARM.ActiveCfg = Release|Win32
-		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|ARM64.ActiveCfg = Release|Win32
+		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|ARM64.ActiveCfg = Release|ARM64
+		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|ARM64.Build.0 = Release|ARM64
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|x64.ActiveCfg = Release|x64
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|x64.Build.0 = Release|x64
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|x86.ActiveCfg = Release|Win32
 		{E977B1BD-00DC-4085-A105-E0A18E0183D7}.Release|x86.Build.0 = Release|Win32
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|Any CPU.ActiveCfg = Debug|Win32
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|ARM.ActiveCfg = Debug|Win32
-		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|ARM64.ActiveCfg = Debug|Win32
+		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|ARM64.Build.0 = Debug|ARM64
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|x64.ActiveCfg = Debug|x64
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|x64.Build.0 = Debug|x64
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|x86.ActiveCfg = Debug|Win32
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Debug|x86.Build.0 = Debug|Win32
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|Any CPU.ActiveCfg = Release|Win32
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|ARM.ActiveCfg = Release|Win32
-		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|ARM64.ActiveCfg = Release|Win32
+		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|ARM64.ActiveCfg = Release|ARM64
+		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|ARM64.Build.0 = Release|ARM64
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|x64.ActiveCfg = Release|x64
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|x64.Build.0 = Release|x64
 		{4B30C685-8490-440F-9879-A75D45DAA361}.Release|x86.ActiveCfg = Release|Win32
@@ -1125,8 +1129,6 @@ Global
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|ARM.ActiveCfg = Debug|ARM
-		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|ARM.Build.0 = Debug|ARM
-		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|ARM.Deploy.0 = Debug|ARM
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|ARM64.Build.0 = Debug|ARM64
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Debug|ARM64.Deploy.0 = Debug|ARM64
@@ -1140,8 +1142,6 @@ Global
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 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Release|Any CPU.Deploy.0 = Release|Any CPU
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Release|ARM.ActiveCfg = Release|ARM
-		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Release|ARM.Build.0 = Release|ARM
-		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Release|ARM.Deploy.0 = Release|ARM
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Release|ARM64.ActiveCfg = Release|ARM64
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Release|ARM64.Build.0 = Release|ARM64
 		{D6A64926-4988-4C64-A5A8-2C14B1388696}.Release|ARM64.Deploy.0 = Release|ARM64
diff --git a/test/TestApps/ToastNotificationsTestApp/ToastNotificationsTestApp.vcxproj b/test/TestApps/ToastNotificationsTestApp/ToastNotificationsTestApp.vcxproj
index 1b8c2f3357..42ab12c8ba 100644
--- a/test/TestApps/ToastNotificationsTestApp/ToastNotificationsTestApp.vcxproj
+++ b/test/TestApps/ToastNotificationsTestApp/ToastNotificationsTestApp.vcxproj
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.211028.7\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.211028.7\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <Import Project="..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.210913.7\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.210913.7\build\native\Microsoft.Windows.CppWinRT.props')" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -18,6 +18,43 @@
       <Configuration>Release</Configuration>
       <Platform>x64</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader>Create</PrecompiledHeader>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="Microsoft.Windows.AppLifecycle">
+      <HintPath>$(OutDir)\..\WindowsAppRuntime_DLL\Microsoft.Windows.AppLifecycle.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Implementation>$(OutDir)\..\WindowsAppRuntime_DLL\Microsoft.WindowsAppRuntime.dll</Implementation>
+    </Reference>
+    <Reference Include="Microsoft.Windows.ToastNotifications">
+      <HintPath>$(OutDir)\..\WindowsAppRuntime_DLL\Microsoft.Windows.ToastNotifications.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Implementation>$(OutDir)\..\WindowsAppRuntime_DLL\Microsoft.WindowsAppRuntime.dll</Implementation>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\dev\WindowsAppRuntime_BootstrapDLL\WindowsAppRuntime_BootstrapDLL.vcxproj">
+      <Project>{f76b776e-86f5-48c5-8fc7-d2795ecc9746}</Project>
+    </ProjectReference>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <VCProjectVersion>16.0</VCProjectVersion>
@@ -53,6 +90,21 @@
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
@@ -71,6 +123,12 @@
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <LinkIncremental>true</LinkIncremental>
@@ -84,122 +142,142 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <LinkIncremental>false</LinkIncremental>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <SDLCheck>true</SDLCheck>
-	  <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-	  <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
-	  <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <DelayLoadDLLs>Microsoft.WindowsAppRuntime.Bootstrap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <SDLCheck>true</SDLCheck>
-	  <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>WIN32;NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-	  <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
-	  <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <DelayLoadDLLs>Microsoft.WindowsAppRuntime.Bootstrap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <SDLCheck>true</SDLCheck>
-	  <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <ConformanceMode>true</ConformanceMode>
-	  <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-	  <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
       <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <DelayLoadDLLs>Microsoft.WindowsAppRuntime.Bootstrap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
+      <DelayLoadDLLs>Microsoft.WindowsAppRuntime.Bootstrap.dll</DelayLoadDLLs>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <SDLCheck>true</SDLCheck>
-	  <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <ConformanceMode>true</ConformanceMode>
-	  <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-	  <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <DelayLoadDLLs>Microsoft.WindowsAppRuntime.Bootstrap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <LanguageStandard>stdcpp17</LanguageStandard>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <DelayLoadDLLs>Microsoft.WindowsAppRuntime.Bootstrap.dll;%(DelayLoadDLLs)</DelayLoadDLLs>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL;..\..\inc</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <LanguageStandard>stdcpp17</LanguageStandard>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
       <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
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-    <Error Condition="!Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.211028.7\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.211028.7\build\native\Microsoft.Windows.CppWinRT.targets'))" />
     <Error Condition="!Exists('..\..\..\packages\Microsoft.Taef.10.58.210222006-develop\build\Microsoft.Taef.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Taef.10.58.210222006-develop\build\Microsoft.Taef.targets'))" />
+    <Error Condition="!Exists('..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.210930.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.210930.1\build\native\Microsoft.Windows.ImplementationLibrary.targets'))" />
+    <Error Condition="!Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.210913.7\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.210913.7\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.210913.7\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.210913.7\build\native\Microsoft.Windows.CppWinRT.targets'))" />
   </Target>
   <Target Name="CopyFiles" AfterTargets="AfterBuild">
     <Copy SourceFiles="$(OutDir)\..\WindowsAppRuntime_BootstrapDLL\Microsoft.WindowsAppRuntime.Bootstrap.dll" DestinationFolder="$(OutDir)" />
   </Target>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/test/TestApps/ToastNotificationsTestApp/ToastNotificationsTestApp.cpp b/test/TestApps/ToastNotificationsTestApp/main.cpp
similarity index 100%
rename from test/TestApps/ToastNotificationsTestApp/ToastNotificationsTestApp.cpp
rename to test/TestApps/ToastNotificationsTestApp/main.cpp
diff --git a/test/TestApps/ToastNotificationsTestApp/pch.cpp b/test/TestApps/ToastNotificationsTestApp/pch.cpp
new file mode 100644
index 0000000000..8c646996e9
--- /dev/null
+++ b/test/TestApps/ToastNotificationsTestApp/pch.cpp
@@ -0,0 +1,3 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+#include "pch.h"
diff --git a/test/ToastNotificationTests/ToastNotificationTests.vcxproj b/test/ToastNotificationTests/ToastNotificationTests.vcxproj
index cc3218ec7a..e7a48afeea 100644
--- a/test/ToastNotificationTests/ToastNotificationTests.vcxproj
+++ b/test/ToastNotificationTests/ToastNotificationTests.vcxproj
@@ -18,6 +18,14 @@
       <Configuration>Release</Configuration>
       <Platform>x64</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <VCProjectVersion>16.0</VCProjectVersion>
@@ -53,6 +61,21 @@
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v142</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+    <UseOfMfc>false</UseOfMfc>
+  </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
@@ -71,6 +94,12 @@
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <LinkIncremental>true</LinkIncremental>
@@ -84,6 +113,9 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <LinkIncremental>false</LinkIncremental>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <WarningLevel>Level3</WarningLevel>
@@ -166,16 +198,56 @@
       <EnableUAC>false</EnableUAC>
     </Link>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;..\inc;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions);;INLINE_TEST_METHOD_MARKUP</PreprocessorDefinitions>
+      <UseFullPaths>true</UseFullPaths>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <AdditionalLibraryDirectories>$(VCInstallDir)UnitTest\lib;%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;wex.common.lib;wex.logger.lib;te.common.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(OutDir)\..\WindowsAppRuntime_DLL;..\inc;$(OutDir)\..\WindowsAppRuntime_BootstrapDLL</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions);;INLINE_TEST_METHOD_MARKUP</PreprocessorDefinitions>
+      <UseFullPaths>true</UseFullPaths>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalLibraryDirectories>$(VCInstallDir)UnitTest\lib;%(AdditionalLibraryDirectories);$(OutDir)\..\WindowsAppRuntime_DLL</AdditionalLibraryDirectories>
+      <AdditionalDependencies>onecore.lib;onecoreuap.lib;Microsoft.WindowsAppRuntime.lib;wex.common.lib;wex.logger.lib;te.common.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="pch.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="APITests.cpp" />
     <ClCompile Include="pch.cpp">
-      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Create</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Create</PrecompiledHeader>
-      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x86'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x86'">Create</PrecompiledHeader>
     </ClCompile>
   </ItemGroup>
   <ItemGroup>