diff --git a/BuildAll.ps1 b/BuildAll.ps1
index 5d99bb1055..23b0fbd30a 100644
--- a/BuildAll.ps1
+++ b/BuildAll.ps1
@@ -332,6 +332,7 @@ Try {
                 Copy-Item -path "BuildOutput\$configurationForMrtAndAnyCPU\$platformToRun\Microsoft.Windows.ApplicationModel.Resources.Projection\Microsoft.Windows.ApplicationModel.Resources.Projection.dll" -destination "$BasePath\lib\net6.0-windows10.0.17763.0" -force
                 Copy-Item -path "BuildOutput\$configurationForMrtAndAnyCPU\$platformToRun\Microsoft.Windows.ApplicationModel.Resources.Projection\Microsoft.Windows.ApplicationModel.Resources.Projection.pdb" -destination "$BasePath\lib\net6.0-windows10.0.17763.0" -force
                 Copy-Item -path "BuildOutput\$configurationForMrtAndAnyCPU\$platformToRun\Microsoft.Windows.ApplicationModel.Resources\Microsoft.Windows.ApplicationModel.Resources.winmd" -destination "$BasePath\lib\uap10.0" -force
+                Copy-Item -path "BuildOutput\$configurationForMrtAndAnyCPU\$platformToRun\Microsoft.Windows.ApplicationModel.Resources\Microsoft.Windows.Globalization.winmd" -destination "$BasePath\lib\uap10.0" -force
             }
         }
 
diff --git a/build/NuSpecs/AppxManifest.xml b/build/NuSpecs/AppxManifest.xml
index e08876e201..d715353b56 100644
--- a/build/NuSpecs/AppxManifest.xml
+++ b/build/NuSpecs/AppxManifest.xml
@@ -22,6 +22,7 @@
           <ActivatableClass ActivatableClassId="Microsoft.Windows.ApplicationModel.Resources.ResourceCandidate" ThreadingModel="both" />
           <ActivatableClass ActivatableClassId="Microsoft.Windows.ApplicationModel.Resources.ResourceLoader" ThreadingModel="both" />
           <ActivatableClass ActivatableClassId="Microsoft.Windows.ApplicationModel.Resources.ResourceManager" ThreadingModel="both" />
+          <ActivatableClass ActivatableClassId="Microsoft.Windows.Globalization.ApplicationLanguages" ThreadingModel="both" />
       </InProcessServer>
     </Extension>
     <Extension Category="windows.activatableClass.inProcessServer">
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/projection/Microsoft.Windows.ApplicationModel.Resources.Projection.csproj b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/projection/Microsoft.Windows.ApplicationModel.Resources.Projection.csproj
index 1630e110f5..65a0c7a109 100644
--- a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/projection/Microsoft.Windows.ApplicationModel.Resources.Projection.csproj
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/projection/Microsoft.Windows.ApplicationModel.Resources.Projection.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net6.0-windows10.0.17763.0</TargetFramework>
     <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
@@ -21,7 +21,7 @@
   </ItemGroup>
 
   <PropertyGroup>
-    <CSWinRTIncludes>Microsoft.Windows.ApplicationModel.Resources</CSWinRTIncludes>
+    <CSWinRTIncludes>Microsoft.Windows.Globalization;Microsoft.Windows.ApplicationModel.Resources</CSWinRTIncludes>
     <CSWinRTWindowsMetadata>10.0.17763.0</CSWinRTWindowsMetadata>
     <NoWarn>MSB3271</NoWarn>
   </PropertyGroup>
@@ -30,10 +30,11 @@
   <PropertyGroup Condition="'$(Configuration)'=='Release'">
     <DebugType>pdbonly</DebugType>
     <DebugSymbols>true</DebugSymbols>
-  </PropertyGroup>	
+  </PropertyGroup>
 
   <ItemGroup>
     <CsWinRTInputs Include="$(OutDir)/**/*.winmd" />
+    <CsWinRTInputs Include="$(BaseOutputPath)/Microsoft.Windows.ApplicationModel.Resources/Microsoft.Windows.Globalization.winmd" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ApplicationLanguages.cpp b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ApplicationLanguages.cpp
new file mode 100644
index 0000000000..892a3ab55a
--- /dev/null
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ApplicationLanguages.cpp
@@ -0,0 +1,56 @@
+// Copyright (c) Microsoft Corporation and Contributors.
+// Licensed under the MIT License.
+
+#include "pch.h"
+#include "ApplicationLanguages.h"
+#include "Microsoft.Windows.Globalization.ApplicationLanguages.g.cpp"
+
+#include <bcp47mrm.h>
+#include <winrt/Windows.Globalization.h>
+
+#include <AppModel.Identity.h>
+
+namespace winrt::Microsoft::Windows::Globalization::implementation
+{
+    hstring ApplicationLanguages::m_language;
+    wil::srwlock ApplicationLanguages::m_lock;
+
+
+    winrt::Windows::Foundation::Collections::IVectorView<hstring> ApplicationLanguages::Languages()
+    {
+        return winrt::Windows::Globalization::ApplicationLanguages::Languages();
+    }
+
+    winrt::Windows::Foundation::Collections::IVectorView<hstring> ApplicationLanguages::ManifestLanguages()
+    {
+        if (AppModel::Identity::IsPackagedProcess())
+        {
+            return winrt::Windows::Globalization::ApplicationLanguages::ManifestLanguages();
+        }
+        else
+        {
+            return {};
+        }
+    }
+
+    hstring ApplicationLanguages::PrimaryLanguageOverride()
+    {
+        auto criticalSection{ m_lock.lock_shared() };
+        return m_language;
+    }
+
+    void ApplicationLanguages::PrimaryLanguageOverride(hstring const& language)
+    {
+        bool isValidLanguageTag = IsWellFormedTag(language.c_str());
+
+        THROW_HR_IF_MSG(E_INVALIDARG, !isValidLanguageTag, "The parameter is incorrect");
+
+        auto criticalSection {m_lock.lock_exclusive()};
+        m_language = language;
+
+        if (AppModel::Identity::IsPackagedProcess())
+        {
+            winrt::Windows::Globalization::ApplicationLanguages::PrimaryLanguageOverride(language);
+        }
+    }
+} // namespace winrt::Microsoft::Windows::Globalization::implementation
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ApplicationLanguages.h b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ApplicationLanguages.h
new file mode 100644
index 0000000000..a7ebba9b0c
--- /dev/null
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ApplicationLanguages.h
@@ -0,0 +1,29 @@
+// Copyright (c) Microsoft Corporation and Contributors.
+// Licensed under the MIT License.
+
+#pragma once
+#include "Microsoft.Windows.Globalization.ApplicationLanguages.g.h"
+
+namespace winrt::Microsoft::Windows::Globalization::implementation
+{
+    struct ApplicationLanguages
+    {
+        ApplicationLanguages() = delete;
+
+        static winrt::Windows::Foundation::Collections::IVectorView<hstring> Languages();
+        static winrt::Windows::Foundation::Collections::IVectorView<hstring> ManifestLanguages();
+        static hstring PrimaryLanguageOverride();
+        static void PrimaryLanguageOverride(hstring const& language);
+
+    private:
+        static hstring m_language;
+        static wil::srwlock m_lock;
+    };
+} // namespace winrt::Microsoft::Windows::Globalization::implementation
+
+namespace winrt::Microsoft::Windows::Globalization::factory_implementation
+{
+    struct ApplicationLanguages : ApplicationLanguagesT<ApplicationLanguages, implementation::ApplicationLanguages>
+    {
+    };
+} // namespace winrt::Microsoft::Windows::Globalization::factory_implementation
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.idl b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.idl
index 3c78578a64..ce3debc026 100644
--- a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.idl
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.idl
@@ -114,3 +114,18 @@ namespace Microsoft.Windows.ApplicationModel.Resources
         static String Theme { get; };
     }
 } // namespace Microsoft.Windows.ApplicationModel.Resources
+
+namespace Microsoft.Windows.Globalization
+{
+    [contractversion(1)]
+    apicontract MrtCoreContract{};
+
+    [contract(MrtCoreContract, 2)]
+    runtimeclass ApplicationLanguages
+    {
+        static IVectorView<String> Languages { get; };
+        static IVectorView<String> ManifestLanguages { get; };
+        static String PrimaryLanguageOverride;
+    }
+
+} // namespace Microsoft.Windows.Globalization
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj
index d03e31913f..354014afcd 100644
--- a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj
@@ -17,7 +17,7 @@
     <DefaultLanguage>en-US</DefaultLanguage>
     <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
     <Keyword>Win32Proj</Keyword>
-    <WindowsTargetPlatformVersion Condition=" '$(WindowsTargetPlatformVersion)' == '' ">10.0.18362.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion Condition=" '$(WindowsTargetPlatformVersion)' == '' ">10.0.20348.0</WindowsTargetPlatformVersion>
     <WindowsTargetPlatformMinVersion>10.0.17134.0</WindowsTargetPlatformMinVersion>
     <!-- Need to add this otherwise the ADO build won't copy mrm.dll to output directory, and eventually the file will miss in ManagedTest.build.appxrecipe and make
          the tests fail to run in ADO pipeline -->
@@ -90,12 +90,13 @@
       </DisableSpecificWarnings>
       <PreprocessorDefinitions>_WINRT_DLL;WIN32_LEAN_AND_MEAN;WINRT_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalUsingDirectories>$(WindowsSDK_WindowsMetadata);$(AdditionalUsingDirectories)</AdditionalUsingDirectories>
+      <AdditionalIncludeDirectories>$(RepoRoot)\dev\Common;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateWindowsMetadata>false</GenerateWindowsMetadata>
       <ModuleDefinitionFile>Microsoft.Windows.ApplicationModel.Resources.def</ModuleDefinitionFile>
-      <AdditionalDependencies>$(OutDir)..\mrm\MRM.lib;onecoreuap.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>$(OutDir)..\mrm\MRM.lib;onecoreuap.lib;bcp47mrm.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
@@ -109,6 +110,7 @@
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClInclude Include="ApplicationLanguages.h" />
     <ClInclude Include="Helper.h" />
     <ClInclude Include="KnownResourceQualifierName.h" />
     <ClInclude Include="pch.h" />
@@ -120,6 +122,7 @@
     <ClInclude Include="ResourceNotFoundEventArgs.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="ApplicationLanguages.cpp" />
     <ClCompile Include="Helper.cpp" />
     <ClCompile Include="KnownResourceQualifierName.cpp" />
     <ClCompile Include="pch.cpp">
@@ -140,7 +143,7 @@
     <None Include="Microsoft.Windows.ApplicationModel.Resources.def" />
   </ItemGroup>
   <ItemGroup>
-    <ResourceCompile Include="Microsoft.Windows.ApplicationModel.Resources.rc">      
+    <ResourceCompile Include="Microsoft.Windows.ApplicationModel.Resources.rc">
       <AdditionalIncludeDirectories>$(RepoRoot);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ResourceCompile>
   </ItemGroup>
@@ -171,6 +174,7 @@
     <Import Project="$(NugetPackageDirectory)\Microsoft.SourceLink.Common.$(MicrosoftSourceLinkCommonVersion)\build\Microsoft.SourceLink.Common.targets" Condition="Exists('$(NugetPackageDirectory)\Microsoft.SourceLink.Common.$(MicrosoftSourceLinkCommonVersion)\build\Microsoft.SourceLink.Common.targets')" />
     <Import Project="$(NugetPackageDirectory)\Microsoft.Build.Tasks.Git.$(MicrosoftBuildTasksGitVersion)\build\Microsoft.Build.Tasks.Git.targets" Condition="Exists('$(NugetPackageDirectory)\Microsoft.Build.Tasks.Git.$(MicrosoftBuildTasksGitVersion)\build\Microsoft.Build.Tasks.Git.targets')" />
     <Import Project="$(NugetPackageDirectory)\Microsoft.SourceLink.GitHub.$(MicrosoftSourceLinkGitHubVersion)\build\Microsoft.SourceLink.GitHub.targets" Condition="Exists('$(NugetPackageDirectory)\Microsoft.SourceLink.GitHub.$(MicrosoftSourceLinkGitHubVersion)\build\Microsoft.SourceLink.GitHub.targets')" />
+    <Import Project="$(NugetPackageDirectory)\Microsoft.Windows.ImplementationLibrary.$(MicrosoftWindowsImplementationLibraryVersion)\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('$(NugetPackageDirectory)\Microsoft.Windows.ImplementationLibrary.$(MicrosoftWindowsImplementationLibraryVersion)\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
   </ImportGroup>
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
     <PropertyGroup>
@@ -185,5 +189,6 @@
     <Error Condition="!Exists('$(NugetPackageDirectory)\Microsoft.Build.Tasks.Git.$(MicrosoftBuildTasksGitVersion)\build\Microsoft.Build.Tasks.Git.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NugetPackageDirectory)\Microsoft.Build.Tasks.Git.$(MicrosoftBuildTasksGitVersion)\build\Microsoft.Build.Tasks.Git.targets'))" />
     <Error Condition="!Exists('$(NugetPackageDirectory)\Microsoft.SourceLink.GitHub.$(MicrosoftSourceLinkGitHubVersion)\build\Microsoft.SourceLink.GitHub.props')" Text="$([System.String]::Format('$(ErrorText)', '$(NugetPackageDirectory)\Microsoft.SourceLink.GitHub.$(MicrosoftSourceLinkGitHubVersion)\build\Microsoft.SourceLink.GitHub.props'))" />
     <Error Condition="!Exists('$(NugetPackageDirectory)\Microsoft.SourceLink.GitHub.$(MicrosoftSourceLinkGitHubVersion)\build\Microsoft.SourceLink.GitHub.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NugetPackageDirectory)\Microsoft.SourceLink.GitHub.$(MicrosoftSourceLinkGitHubVersion)\build\Microsoft.SourceLink.GitHub.targets'))" />
+    <Error Condition="!Exists('$(NugetPackageDirectory)\Microsoft.Windows.ImplementationLibrary.$(MicrosoftWindowsImplementationLibraryVersion)\build\native\Microsoft.Windows.ImplementationLibrary.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(NugetPackageDirectory)\Microsoft.Windows.ImplementationLibrary.$(MicrosoftWindowsImplementationLibraryVersion)\build\native\Microsoft.Windows.ImplementationLibrary.targets'))" />
   </Target>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj.filters b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj.filters
index da85707150..2bec9237a6 100644
--- a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj.filters
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/Microsoft.Windows.ApplicationModel.Resources.vcxproj.filters
@@ -29,6 +29,9 @@
     <ClCompile Include="KnownResourceQualifierName.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="ApplicationLanguages.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="pch.h">
@@ -58,6 +61,9 @@
     <ClInclude Include="KnownResourceQualifierName.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="ApplicationLanguages.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Midl Include="Microsoft.Windows.ApplicationModel.Resources.idl" />
@@ -75,4 +81,7 @@
       <UniqueIdentifier>{54696afe-f42a-494a-bc24-3fd0d4192122}</UniqueIdentifier>
     </Filter>
   </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="Microsoft.Windows.ApplicationModel.Resources.rc" />
+  </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ResourceContext.cpp b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ResourceContext.cpp
index 88ca9a0b31..73a7e2188b 100644
--- a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ResourceContext.cpp
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/ResourceContext.cpp
@@ -8,6 +8,10 @@
 
 const wchar_t c_languageQualifierName[] = L"Language";
 
+#include "ApplicationLanguages.h"
+
+using namespace winrt::Microsoft::Windows::Globalization;
+
 namespace winrt::Microsoft::Windows::ApplicationModel::Resources::implementation
 {
 void ResourceContext::InitializeQualifierNames()
@@ -97,6 +101,10 @@ void ResourceContext::Apply()
             winrt::check_hresult(MrmSetQualifier(m_resourceContext, eachValue.Key().c_str(), eachValue.Value().c_str()));
         }
     }
+    if (!ApplicationLanguages::PrimaryLanguageOverride().empty())
+    {
+        winrt::check_hresult(MrmSetQualifier(m_resourceContext, c_languageQualifierName, ApplicationLanguages::PrimaryLanguageOverride().c_str()));
+    }
 }
 
 hstring ResourceContext::GetLangugageContext()
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/packages.config b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/packages.config
index 9b45da6a85..28bc519cd2 100644
--- a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/packages.config
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/packages.config
@@ -4,4 +4,5 @@
   <package id="Microsoft.SourceLink.Common" version="1.1.1" targetFramework="native" developmentDependency="true" />
   <package id="Microsoft.SourceLink.GitHub" version="1.1.1" targetFramework="native" developmentDependency="true" />
   <package id="Microsoft.Windows.CppWinRT" version="2.0.230706.1" targetFramework="native" />
-</packages>
+  <package id="Microsoft.Windows.ImplementationLibrary" version="1.0.220914.1" targetFramework="native" />
+</packages>
\ No newline at end of file
diff --git a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/pch.h b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/pch.h
index 5aae2ce383..d1d419ea2e 100644
--- a/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/pch.h
+++ b/dev/MRTCore/mrt/Microsoft.Windows.ApplicationModel.Resources/src/pch.h
@@ -7,6 +7,9 @@
 #include <winrt/Windows.Foundation.Collections.h>
 #include "..\..\core\src\MRM.h"
 
+#include <wil/result_macros.h>
+#include <wil/resource.h>
+
 struct StringResourceFreer
 {
     void operator()(wchar_t* resource) { MrmFreeResource(resource); }