diff --git a/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.Interop.csproj b/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.Interop.csproj
index 0eae08f67e..2918ee1923 100644
--- a/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.Interop.csproj
+++ b/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.Interop.csproj
@@ -12,10 +12,11 @@
     <BuildOutputDir>$(OnnxRuntimeBuildDirectory)\$(Configuration)\$(Configuration)</BuildOutputDir>
     <WindowsAIInteropOutputDir>$(BuildOutputDir)\Microsoft.AI.MachineLearning.Interop</WindowsAIInteropOutputDir>
     <OutputPath>$(WindowsAIInteropOutputDir)</OutputPath>
+    <LangVersion>7.3</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Windows.CsWinRT" Version="0.1.0-prerelease.200512.7" targetFramework="net46" />
+    <PackageReference Include="Microsoft.Windows.CsWinRT" Version="0.1.0-prerelease.200629.3" targetFramework="net46" />
     <PackageReference Include="Microsoft.Windows.SDK.NET" Version="10.0.18362.3-preview" />
   </ItemGroup>
 
@@ -25,7 +26,7 @@
 
   <Target Name="GenerateProjection" BeforeTargets="DispatchToInnerBuilds;Build;CoreCompile">
     <ConvertToAbsolutePath Paths="$(OnnxRuntimeBuildDirectory)">
-      <Output TaskParameter="AbsolutePaths" PropertyName="OnnxRuntimeBuildDirectoryAbs"/>
+      <Output TaskParameter="AbsolutePaths" PropertyName="OnnxRuntimeBuildDirectoryAbs" />
     </ConvertToAbsolutePath>
 
     <ItemGroup>
@@ -36,8 +37,8 @@
       <CsWinRTCommand>$(CsWinRTPath)cswinrt.exe -verbose -in local -in @(WindowsAIsWinMDs->'"%(FullPath)"', ' ') -out "$(ProjectDir)Generated Files" -include Microsoft.AI.MachineLearning</CsWinRTCommand>
     </PropertyGroup>
 
-    <Message Text="Generating $(ProjectName) CS projection sources with command:"/>
-    <Message Text="$(CsWinRTCommand)"/>
+    <Message Text="Generating $(ProjectName) CS projection sources with command:" />
+    <Message Text="$(CsWinRTCommand)" />
     <Exec Command="$(CsWinRTCommand)" />
     
     <ItemGroup>
diff --git a/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.targets b/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.targets
index 0c38e34e04..85bc61489d 100644
--- a/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.targets
+++ b/csharp/src/Microsoft.AI.MachineLearning.Interop/Microsoft.AI.MachineLearning.targets
@@ -3,6 +3,8 @@
   <PropertyGroup>
     <WindowsAI-Platform Condition="'$(PlatformTarget)' == 'x64' OR ('$(PlatformTarget)' == 'AnyCPU' AND '$(Prefer32Bit)' != 'true')">x64</WindowsAI-Platform>
     <WindowsAI-Platform Condition="'$(PlatformTarget)' == 'x86' OR ('$(PlatformTarget)' == 'AnyCPU' AND '$(Prefer32Bit)' == 'true')">x86</WindowsAI-Platform>
+    <WindowsAI-Platform Condition="'$(PlatformTarget)' == '' AND '$(Prefer32Bit)' != 'true'">x64</WindowsAI-Platform>
+    <WindowsAI-Platform Condition="'$(PlatformTarget)' == '' AND '$(Prefer32Bit)' == 'true'">x86</WindowsAI-Platform>
     <WindowsAI-Platform Condition="'$(WindowsAI-Platform)' == ''">$(PlatformTarget)</WindowsAI-Platform>
   </PropertyGroup>
 
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/main.cs b/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/main.cs
deleted file mode 100644
index 1c86164698..0000000000
--- a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/main.cs
+++ /dev/null
@@ -1,92 +0,0 @@
-using System;
-using System.IO;
-
-using Microsoft.AI.MachineLearning;
-using WinRT;
-
-namespace Microsoft.AI.MachineLearning.Tests
-{
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            Console.WriteLine("Load squeezenet.onnx.");
-            using (var model = LearningModel.LoadFromFilePath("squeezenet.onnx"))
-            {
-               Console.WriteLine("Load kitten_224.png as StorageFile.");
-               var name = AppDomain.CurrentDomain.BaseDirectory + "kitten_224.png";
-               var image_task = Windows.Storage.StorageFile.GetFileFromPathAsync(name);
-               image_task.AsTask().Wait();
-               var image = image_task.GetResults();
-               Console.WriteLine("Load StorageFile into Stream.");
-               var stream_task = image.OpenReadAsync();
-               System.Threading.Thread.Sleep(1000);
-               // stream_task.AsTask().Wait();
-               //
-               // Unable to call AsTask on IAsyncOperation<IRandomAccessStreamWithContentType>... 
-               // System.TypeInitializationException: 'The type initializer for 'ABI.Windows.Foundation.AsyncOperationCompletedHandler`1' threw an exception.'
-               // This exception was originally thrown at this call stack:
-               //   System.RuntimeType.ThrowIfTypeNeverValidGenericArgument(System.RuntimeType)
-               //   System.RuntimeType.SanityCheckGenericArguments(System.RuntimeType[], System.RuntimeType[])
-               //   System.RuntimeType.MakeGenericType(System.Type[])
-               //   System.Linq.Expressions.Compiler.DelegateHelpers.MakeNewDelegate(System.Type[])
-               //   System.Linq.Expressions.Compiler.DelegateHelpers.MakeDelegateType(System.Type[])
-               //   ABI.Windows.Foundation.AsyncOperationCompletedHandler<TResult>.AsyncOperationCompletedHandler()
-               // 
-               // So sleep instead...
-               using (var stream = stream_task.GetResults())
-               {
-                   Console.WriteLine("Create SoftwareBitmap from decoded Stream.");
-                   var decoder_task = Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);
-                   System.Threading.Thread.Sleep(1000);
-                   // decoder_task.AsTask().Wait();
-                   //
-                   // Unable to call AsTask on IAsyncOperation<SoftwareBitmap>... 
-                   // System.TypeInitializationException: 'The type initializer for 'ABI.Windows.Foundation.AsyncOperationCompletedHandler`1' threw an exception.'
-                   // This exception was originally thrown at this call stack:
-                   //   System.RuntimeType.ThrowIfTypeNeverValidGenericArgument(System.RuntimeType)
-                   //   System.RuntimeType.SanityCheckGenericArguments(System.RuntimeType[], System.RuntimeType[])
-                   //   System.RuntimeType.MakeGenericType(System.Type[])
-                   //   System.Linq.Expressions.Compiler.DelegateHelpers.MakeNewDelegate(System.Type[])
-                   //   System.Linq.Expressions.Compiler.DelegateHelpers.MakeDelegateType(System.Type[])
-                   //   ABI.Windows.Foundation.AsyncOperationCompletedHandler<TResult>.AsyncOperationCompletedHandler()
-                   // 
-                   // So sleep instead...
-                   var decoder = decoder_task.GetResults();
-                   var software_bitmap_task = decoder.GetSoftwareBitmapAsync();
-                   System.Threading.Thread.Sleep(1000);
-                   // software_bitmap_task.AsTask().Wait();
-                   //
-                   // Unable to call AsTask on IAsyncOperation<SoftwareBitmap>... 
-                   // System.TypeInitializationException: 'The type initializer for 'ABI.Windows.Foundation.AsyncOperationCompletedHandler`1' threw an exception.'
-                   // This exception was originally thrown at this call stack:
-                   //   System.RuntimeType.ThrowIfTypeNeverValidGenericArgument(System.RuntimeType)
-                   //   System.RuntimeType.SanityCheckGenericArguments(System.RuntimeType[], System.RuntimeType[])
-                   //   System.RuntimeType.MakeGenericType(System.Type[])
-                   //   System.Linq.Expressions.Compiler.DelegateHelpers.MakeNewDelegate(System.Type[])
-                   //   System.Linq.Expressions.Compiler.DelegateHelpers.MakeDelegateType(System.Type[])
-                   //   ABI.Windows.Foundation.AsyncOperationCompletedHandler<TResult>.AsyncOperationCompletedHandler()
-                   // 
-                   // So sleep instead...
-                   using (var software_bitmap = software_bitmap_task.GetResults())
-                   {
-                       Console.WriteLine("Create VideoFrame.");
-                       var frame = Windows.Media.VideoFrame.CreateWithSoftwareBitmap(software_bitmap);
-
-                       Console.WriteLine("Create LearningModelSession.");
-                       using (var session = new LearningModelSession(model))
-                       {
-                           Console.WriteLine("Create LearningModelBinding.");
-                           var binding = new LearningModelBinding(session);
-                           Console.WriteLine("Bind data_0.");
-                           binding.Bind("data_0", frame);
-                           Console.WriteLine("Evaluate.");
-                           var results = session.Evaluate(binding, "");
-                       }
-                       Console.WriteLine("Success!\n");
-                   }
-               }
-            }
-        }
-    }
-}
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/.gitignore b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/.gitignore
similarity index 100%
rename from csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/.gitignore
rename to csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/.gitignore
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj
new file mode 100644
index 0000000000..7ad720a780
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj
@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <Platforms>AnyCPU;x64</Platforms>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AI.MachineLearning" Version="1.4.0-dev-20200728-0957-6cb93ccb5" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="..\..\testdata\squeezenet.onnx">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      <Visible>true</Visible>
+    </None>
+    <None Include="..\..\..\winml\test\collateral\images\kitten_224.png">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      <Visible>true</Visible>
+    </None>
+  </ItemGroup>
+
+</Project>
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj.pp b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj.pp
new file mode 100644
index 0000000000..8b5d03434e
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj.pp
@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <Platforms>AnyCPU;x64</Platforms>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AI.MachineLearning" Version="[PackageVersion]" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="..\..\testdata\squeezenet.onnx">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      <Visible>true</Visible>
+    </None>
+    <None Include="..\..\..\winml\test\collateral\images\kitten_224.png">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      <Visible>true</Visible>
+    </None>
+  </ItemGroup>
+
+</Project>
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/NuGet.config b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/NuGet.config
new file mode 100644
index 0000000000..246b26a586
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/NuGet.config
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+<solution>
+    <add key="disableSourceControlIntegration" value="true" />
+</solution>
+<packageSources>
+ <add key="NuGet Official" value="https://api.nuget.org/v3/index.json" />
+ <add key="BuildArtifacts" value="E:\nugets" />
+</packageSources>
+</configuration>
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/NuGet.config.pp b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/NuGet.config.pp
new file mode 100644
index 0000000000..7597671d5b
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/NuGet.config.pp
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+<solution>
+    <add key="disableSourceControlIntegration" value="true" />
+</solution>
+<packageSources>
+ <add key="NuGet Official" value="https://api.nuget.org/v3/index.json" />
+ <add key="BuildArtifacts" value="[BuildPackageSource]" />
+</packageSources>
+</configuration>
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Program.cs b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Program.cs
new file mode 100644
index 0000000000..9f76811568
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetCore3_0/Program.cs
@@ -0,0 +1,70 @@
+using System;
+
+namespace ConsoleApp17
+{
+    class Program
+    {
+        static void PerformInference(Windows.Media.VideoFrame frame)
+        {
+            Console.WriteLine("Load squeezenet.onnx.");
+            using (var model = Microsoft.AI.MachineLearning.LearningModel.LoadFromFilePath("squeezenet.onnx"))
+            {
+                Console.WriteLine("Create LearningModelSession.");
+                using (var session = new Microsoft.AI.MachineLearning.LearningModelSession(model))
+                {
+                    Console.WriteLine("Create LearningModelBinding.");
+                    var binding = new Microsoft.AI.MachineLearning.LearningModelBinding(session);
+                    Console.WriteLine("Bind data_0.");
+                    binding.Bind("data_0", frame);
+                    Console.WriteLine("Evaluate.");
+                    var results = session.Evaluate(binding, "");
+                }
+                Console.WriteLine("Success!\n");
+            }
+        }
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Load kitten_224.png as StorageFile.");
+            var name = AppDomain.CurrentDomain.BaseDirectory + "kitten_224.png";
+            var getFileFromPathTask = Windows.Storage.StorageFile.GetFileFromPathAsync(name);
+            getFileFromPathTask.AsTask()
+                .ContinueWith<Windows.Storage.Streams.IRandomAccessStreamWithContentType>(
+                    (task) =>
+                    {
+                        var image = task.Result;
+                        Console.WriteLine("Load StorageFile into Stream.");
+                        var stream_task = image.OpenReadAsync();
+                        return stream_task.AsTask().Result;
+                    })
+                .ContinueWith<Windows.Graphics.Imaging.BitmapDecoder>(
+                    (task) =>
+                    {
+                        using (var stream = task.Result)
+                        {
+                            Console.WriteLine("Create SoftwareBitmap from decoded Stream.");
+                            var decoder_task = Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);
+                            return decoder_task.AsTask().Result;
+                        }
+                    })
+                .ContinueWith<Windows.Graphics.Imaging.SoftwareBitmap>(
+                    (task) =>
+                    {
+                        var decoder = task.Result;
+                        var software_bitmap_task = decoder.GetSoftwareBitmapAsync();
+                        return software_bitmap_task.AsTask().Result;
+                    })
+                .ContinueWith(
+                    (task) =>
+                    {
+                        using (var software_bitmap = task.Result)
+                        {
+                            Console.WriteLine("Create VideoFrame.");
+                            var frame = Windows.Media.VideoFrame.CreateWithSoftwareBitmap(software_bitmap);
+                            PerformInference(frame);
+                        }
+                    })
+                .Wait();
+                    
+        }
+    }
+}
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/.gitignore b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/.gitignore
new file mode 100644
index 0000000000..b05d286e48
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/.gitignore
@@ -0,0 +1,4 @@
+# build, distribute, and bins (+ python proto bindings)
+Debug
+x64
+packages
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/Microsoft.AI.MachineLearning.Tests.CSharp.csproj b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj
similarity index 81%
rename from csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/Microsoft.AI.MachineLearning.Tests.CSharp.csproj
rename to csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj
index 990dc65f90..c3db4b372a 100644
--- a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/Microsoft.AI.MachineLearning.Tests.CSharp.csproj
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props')" />
+  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}</ProjectGuid>
     <OutputType>Exe</OutputType>
-    <RootNamespace>Microsoft.AI.MachineLearning.Tests.CSharp</RootNamespace>
-    <AssemblyName>Microsoft.AI.MachineLearning.Tests.CSharp</AssemblyName>
+    <RootNamespace>Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2</RootNamespace>
+    <AssemblyName>Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2</AssemblyName>
     <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
@@ -59,7 +59,7 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.AI.MachineLearning.Interop, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>packages\Microsoft.AI.MachineLearning.1.3.1-dev-20200626-0616-f44313c3d\lib\netstandard2.0\Microsoft.AI.MachineLearning.Interop.dll</HintPath>
+      <HintPath>packages\Microsoft.AI.MachineLearning.1.4.0-dev-20200728-0957-6cb93ccb5\lib\netstandard2.0\Microsoft.AI.MachineLearning.Interop.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.Windows.SDK.NET, Version=10.0.18362.3, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>packages\Microsoft.Windows.SDK.NET.10.0.18362.3-preview\lib\netstandard2.0\Microsoft.Windows.SDK.NET.dll</HintPath>
@@ -73,7 +73,7 @@
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
     <Reference Include="winrt.runtime, Version=0.1.0.1677, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\lib\netstandard2.0\winrt.runtime.dll</HintPath>
+      <HintPath>packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\lib\netstandard2.0\winrt.runtime.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -102,10 +102,10 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props'))" />
-    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets'))" />
-    <Error Condition="!Exists('packages\Microsoft.AI.MachineLearning.1.3.1-dev-20200626-0616-f44313c3d\build\netstandard2.0\Microsoft.AI.MachineLearning.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.AI.MachineLearning.1.3.1-dev-20200626-0616-f44313c3d\build\netstandard2.0\Microsoft.AI.MachineLearning.targets'))" />
+    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props'))" />
+    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets'))" />
+    <Error Condition="!Exists('packages\Microsoft.AI.MachineLearning.1.4.0-dev-20200728-0957-6cb93ccb5\build\netstandard2.0\Microsoft.AI.MachineLearning.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.AI.MachineLearning.1.4.0-dev-20200728-0957-6cb93ccb5\build\netstandard2.0\Microsoft.AI.MachineLearning.targets'))" />
   </Target>
-  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets')" />
-  <Import Project="packages\Microsoft.AI.MachineLearning.1.3.1-dev-20200626-0616-f44313c3d\build\netstandard2.0\Microsoft.AI.MachineLearning.targets" Condition="Exists('packages\Microsoft.AI.MachineLearning.1.3.1-dev-20200626-0616-f44313c3d\build\netstandard2.0\Microsoft.AI.MachineLearning.targets')" />
+  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets')" />
+  <Import Project="packages\Microsoft.AI.MachineLearning.1.4.0-dev-20200728-0957-6cb93ccb5\build\netstandard2.0\Microsoft.AI.MachineLearning.targets" Condition="Exists('packages\Microsoft.AI.MachineLearning.1.4.0-dev-20200728-0957-6cb93ccb5\build\netstandard2.0\Microsoft.AI.MachineLearning.targets')" />
 </Project>
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/Microsoft.AI.MachineLearning.Tests.CSharp.csproj.pp b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj.pp
similarity index 89%
rename from csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/Microsoft.AI.MachineLearning.Tests.CSharp.csproj.pp
rename to csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj.pp
index b0dd62e91a..45ed3d884f 100644
--- a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/Microsoft.AI.MachineLearning.Tests.CSharp.csproj.pp
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj.pp
@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props')" />
+  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}</ProjectGuid>
     <OutputType>Exe</OutputType>
-    <RootNamespace>Microsoft.AI.MachineLearning.Tests.CSharp</RootNamespace>
-    <AssemblyName>Microsoft.AI.MachineLearning.Tests.CSharp</AssemblyName>
+    <RootNamespace>Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2</RootNamespace>
+    <AssemblyName>Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2</AssemblyName>
     <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
@@ -73,7 +73,7 @@
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
     <Reference Include="winrt.runtime, Version=0.1.0.1677, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\lib\netstandard2.0\winrt.runtime.dll</HintPath>
+      <HintPath>packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\lib\netstandard2.0\winrt.runtime.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -102,10 +102,10 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.props'))" />
-    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets'))" />
+    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.props'))" />
+    <Error Condition="!Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets'))" />
     <Error Condition="!Exists('packages\Microsoft.AI.MachineLearning.[PackageVersion]\build\netstandard2.0\Microsoft.AI.MachineLearning.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.AI.MachineLearning.[PackageVersion]\build\netstandard2.0\Microsoft.AI.MachineLearning.targets'))" />
   </Target>
-  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200512.7\build\Microsoft.Windows.CsWinRT.targets')" />
+  <Import Project="packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets" Condition="Exists('packages\Microsoft.Windows.CsWinRT.0.1.0-prerelease.200629.3\build\Microsoft.Windows.CsWinRT.targets')" />
   <Import Project="packages\Microsoft.AI.MachineLearning.[PackageVersion]\build\netstandard2.0\Microsoft.AI.MachineLearning.targets" Condition="Exists('packages\Microsoft.AI.MachineLearning.[PackageVersion]\build\netstandard2.0\Microsoft.AI.MachineLearning.targets')" />
 </Project>
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.sln b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.sln
new file mode 100644
index 0000000000..c95abf46b0
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.1082
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2", "Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj", "{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Debug|x64 = Debug|x64
+		Release|Any CPU = Release|Any CPU
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Debug|x64.ActiveCfg = Debug|x64
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Debug|x64.Build.0 = Debug|x64
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Release|x64.ActiveCfg = Release|x64
+		{717C645E-9C4A-4EBF-A0AF-676B265E8CDA}.Release|x64.Build.0 = Release|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {4998D043-F471-4AEC-9959-CCE3D27A444E}
+	EndGlobalSection
+EndGlobal
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/NuGet.config b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/NuGet.config
new file mode 100644
index 0000000000..246b26a586
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/NuGet.config
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+<solution>
+    <add key="disableSourceControlIntegration" value="true" />
+</solution>
+<packageSources>
+ <add key="NuGet Official" value="https://api.nuget.org/v3/index.json" />
+ <add key="BuildArtifacts" value="E:\nugets" />
+</packageSources>
+</configuration>
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/NuGet.config.pp b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/NuGet.config.pp
new file mode 100644
index 0000000000..7597671d5b
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/NuGet.config.pp
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+<solution>
+    <add key="disableSourceControlIntegration" value="true" />
+</solution>
+<packageSources>
+ <add key="NuGet Official" value="https://api.nuget.org/v3/index.json" />
+ <add key="BuildArtifacts" value="[BuildPackageSource]" />
+</packageSources>
+</configuration>
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/main.cs b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/main.cs
new file mode 100644
index 0000000000..3e3910ac3a
--- /dev/null
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/main.cs
@@ -0,0 +1,77 @@
+using System;
+using System.IO;
+
+using Microsoft.AI.MachineLearning;
+using WinRT;
+
+namespace Microsoft.AI.MachineLearning.Tests
+{
+    class Program
+    {
+        static void PerformInference(Windows.Media.VideoFrame frame)
+        {
+            Console.WriteLine("Load squeezenet.onnx.");
+            using (var model = Microsoft.AI.MachineLearning.LearningModel.LoadFromFilePath("squeezenet.onnx"))
+            {
+                Console.WriteLine("Create LearningModelSession.");
+                using (var session = new Microsoft.AI.MachineLearning.LearningModelSession(model))
+                {
+                    Console.WriteLine("Create LearningModelBinding.");
+                    var binding = new Microsoft.AI.MachineLearning.LearningModelBinding(session);
+                    Console.WriteLine("Bind data_0.");
+                    binding.Bind("data_0", frame);
+                    Console.WriteLine("Evaluate.");
+                    var results = session.Evaluate(binding, "");
+                }
+                Console.WriteLine("Success!\n");
+            }
+        }
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Load kitten_224.png as StorageFile.");
+            var name = AppDomain.CurrentDomain.BaseDirectory + "kitten_224.png";
+            var getFileFromPathTask = Windows.Storage.StorageFile.GetFileFromPathAsync(name);
+            getFileFromPathTask.AsTask()
+                .ContinueWith<Windows.Storage.Streams.IRandomAccessStreamWithContentType>(
+                    (task) =>
+                    {
+                        var image = task.Result;
+                        Console.WriteLine("Load StorageFile into Stream.");
+                        var stream_task = image.OpenReadAsync();
+                        // https://github.com/microsoft/CsWinRT/issues/335
+                        return stream_task.AsTask().Result;
+                    })
+                .ContinueWith<Windows.Graphics.Imaging.BitmapDecoder>(
+                    (task) =>
+                    {
+                        using (var stream = task.Result)
+                        {
+                            Console.WriteLine("Create SoftwareBitmap from decoded Stream.");
+                            var decoder_task = Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);
+                            // https://github.com/microsoft/CsWinRT/issues/335
+                            return decoder_task.AsTask().Result;
+                        }
+                    })
+                .ContinueWith<Windows.Graphics.Imaging.SoftwareBitmap>(
+                    (task) =>
+                    {
+                        var decoder = task.Result;
+                        var software_bitmap_task = decoder.GetSoftwareBitmapAsync();
+                        // https://github.com/microsoft/CsWinRT/issues/335
+                        return software_bitmap_task.AsTask().Result;
+                    })
+                .ContinueWith(
+                    (task) =>
+                    {
+                        using (var software_bitmap = task.Result)
+                        {
+                            Console.WriteLine("Create VideoFrame.");
+                            var frame = Windows.Media.VideoFrame.CreateWithSoftwareBitmap(software_bitmap);
+                            PerformInference(frame);
+                        }
+                    })
+                .Wait();
+
+        }
+    }
+}
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/packages.config b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/packages.config
similarity index 59%
rename from csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/packages.config
rename to csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/packages.config
index 45703bd08c..b715ddcb76 100644
--- a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/packages.config
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Microsoft.AI.MachineLearning" version="1.3.1-dev-20200626-0616-f44313c3d" targetFramework="net472" />
-  <package id="Microsoft.Windows.CsWinRT" version="0.1.0-prerelease.200512.7" targetFramework="net472" />
+  <package id="Microsoft.AI.MachineLearning" version="1.4.0-dev-20200728-0957-6cb93ccb5" targetFramework="net472" />
+  <package id="Microsoft.Windows.CsWinRT" version="0.1.0-prerelease.200629.3" targetFramework="net472" />
   <package id="Microsoft.Windows.SDK.NET" version="10.0.18362.3-preview" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/packages.config.pp b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/packages.config.pp
similarity index 88%
rename from csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/packages.config.pp
rename to csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/packages.config.pp
index cacc1fee8c..fac1ec7a90 100644
--- a/csharp/test/Microsoft.AI.MachineLearning.Tests.CSharp/packages.config.pp
+++ b/csharp/test/Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2/packages.config.pp
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.AI.MachineLearning" version="[PackageVersion]" targetFramework="net472" />
-  <package id="Microsoft.Windows.CsWinRT" version="0.1.0-prerelease.200512.7" targetFramework="net472" />
+  <package id="Microsoft.Windows.CsWinRT" version="0.1.0-prerelease.200629.3" targetFramework="net472" />
   <package id="Microsoft.Windows.SDK.NET" version="10.0.18362.3-preview" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/tools/ci_build/github/azure-pipelines/nuget/templates/windowsai.yml b/tools/ci_build/github/azure-pipelines/nuget/templates/windowsai.yml
index 1d9953b18d..ac78db376c 100644
--- a/tools/ci_build/github/azure-pipelines/nuget/templates/windowsai.yml
+++ b/tools/ci_build/github/azure-pipelines/nuget/templates/windowsai.yml
@@ -346,26 +346,34 @@ jobs:
       workingDirectory: $(Build.ArtifactStagingDirectory)\merged
 
   - task: PowerShell@2
-    displayName: 'NuGet Tests: Restore Windows.AI.MachineLearning Nuget Package (C#)'
+    displayName: 'NuGet Tests: Build Tests (CppWinRT)'
+    inputs:
+      targetType: 'inline'
+      script: |
+        msbuild /p:Platform=x86 Microsoft.AI.MachineLearning.Tests.vcxproj
+        msbuild /p:Platform=x64 Microsoft.AI.MachineLearning.Tests.vcxproj
+      workingDirectory: $(Build.SourcesDirectory)\csharp\test\Microsoft.AI.MachineLearning.Tests
+
+  - task: PowerShell@2
+    displayName: 'NuGet Tests: Fix Nuget Package references (.NET FRAMEWORK 4.7.2)'
     inputs:
       targetType: 'inline'
       script: |
         Add-Type -AssemblyName "System.IO.Compression.FileSystem"
 
+        $src_root_dir = $Env:BUILD_SOURCESDIRECTORY;
+        $artifacts_staging_dir = $Env:BUILD_ARTIFACTSTAGINGDIRECTORY;
+        $merged_nuget_path = [System.IO.Path]::Combine($artifacts_staging_dir, 'merged')
         $nupkgs = (Get-ChildItem -Filter Microsoft.AI.MachineLearning*)
         $merged_nuget_package = $nupkgs[0]
         $merged_nuget_package_name = $merged_nuget_package.Name
         $matched_name = ($merged_nuget_package_name -match "Microsoft.AI.MachineLearning.(?<version>.*).nupkg")
         $package_version = $matches['version']
 
-        $src_root_dir = $Env:BUILD_SOURCESDIRECTORY;
-        $artifacts_staging_dir = $Env:BUILD_ARTIFACTSTAGINGDIRECTORY;
-        $merged_nuget_path = [System.IO.Path]::Combine($artifacts_staging_dir, 'merged')
-        $src_dir = [System.IO.Path]::Combine($src_root_dir, 'csharp', 'test', 'Microsoft.AI.MachineLearning.Tests.CSharp')
+        $src_dir = [System.IO.Path]::Combine($src_root_dir, 'csharp', 'test', 'Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2')
+        $input_csproj = [System.IO.Path]::Combine($src_dir, 'Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj.pp')
+        $csproj = [System.IO.Path]::Combine($src_dir, 'Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj')
         $packages_dir = [System.IO.Path]::Combine($src_dir, 'packages')
-
-        $input_csproj = [System.IO.Path]::Combine($src_dir, 'Microsoft.AI.MachineLearning.Tests.CSharp.csproj.pp')
-        $csproj = [System.IO.Path]::Combine($src_dir, 'Microsoft.AI.MachineLearning.Tests.CSharp.csproj')
         $input_csproj_content = Get-Content -Path $input_csproj
         $csproj_content = $input_csproj_content -replace '\[PackageVersion\]', $package_version
         Set-Content -Path $csproj -Value $csproj_content
@@ -379,23 +387,56 @@ jobs:
         nuget restore -PackagesDirectory $packages_dir -Source https://api.nuget.org/v3/index.json -Source $merged_nuget_path $csproj
       workingDirectory: $(Build.ArtifactStagingDirectory)\merged
 
-  - task: PowerShell@2
-    displayName: 'NuGet Tests: Build Tests (CppWinRT)'
-    inputs:
-      targetType: 'inline'
-      script: |
-        msbuild /p:Platform=x86 Microsoft.AI.MachineLearning.Tests.vcxproj
-        msbuild /p:Platform=x64 Microsoft.AI.MachineLearning.Tests.vcxproj
-      workingDirectory: $(Build.SourcesDirectory)\csharp\test\Microsoft.AI.MachineLearning.Tests
-
   - task: PowerShell@2
     displayName: 'NuGet Tests: Build Tests (C#)'
+    inputs:
+      targetType: 'inline'
+      script: |        
+        msbuild Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj /p:Platform=AnyCpu
+        msbuild Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.csproj /p:Platform=x64
+      workingDirectory: $(Build.SourcesDirectory)\csharp\test\Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2
+
+  - task: PowerShell@2
+    displayName: 'NuGet Tests: Fix Nuget Package references (.NET CORE 3.0)'
     inputs:
       targetType: 'inline'
       script: |
-        msbuild Microsoft.AI.MachineLearning.Tests.CSharp.csproj /p:Platform=AnyCpu
-        msbuild Microsoft.AI.MachineLearning.Tests.CSharp.csproj /p:Platform=x64
-      workingDirectory: $(Build.SourcesDirectory)\csharp\test\Microsoft.AI.MachineLearning.Tests.CSharp
+        Add-Type -AssemblyName "System.IO.Compression.FileSystem"
+
+        $src_root_dir = $Env:BUILD_SOURCESDIRECTORY;
+        $artifacts_staging_dir = $Env:BUILD_ARTIFACTSTAGINGDIRECTORY;
+        $merged_nuget_path = [System.IO.Path]::Combine($artifacts_staging_dir, 'merged')
+        $nupkgs = (Get-ChildItem -Filter Microsoft.AI.MachineLearning*)
+        $merged_nuget_package = $nupkgs[0]
+        $merged_nuget_package_name = $merged_nuget_package.Name
+        $matched_name = ($merged_nuget_package_name -match "Microsoft.AI.MachineLearning.(?<version>.*).nupkg")
+        $package_version = $matches['version']
+
+        $src_dir = [System.IO.Path]::Combine($src_root_dir, 'csharp', 'test', 'Microsoft.AI.MachineLearning.Tests.DotNetCore3_0')
+        $input_csproj = [System.IO.Path]::Combine($src_dir, 'Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj.pp')
+        $csproj = [System.IO.Path]::Combine($src_dir, 'Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj')
+        $input_csproj_content = Get-Content -Path $input_csproj
+        $csproj_content = $input_csproj_content -replace '\[PackageVersion\]', $package_version
+        Set-Content -Path $csproj -Value $csproj_content
+
+        $input_nuget_config = [System.IO.Path]::Combine($src_dir, 'NuGet.config.pp')
+        $nuget_config = [System.IO.Path]::Combine($src_dir, 'NuGet.config')
+        $input_nuget_config_content = Get-Content -Path $input_nuget_config
+        $nuget_config_content = $input_nuget_config_content -replace '\[BuildPackageSource\]', $merged_nuget_path
+        Set-Content -Path $nuget_config -Value $nuget_config_content
+      workingDirectory: $(Build.ArtifactStagingDirectory)\merged
+
+
+  - task: PowerShell@2
+    displayName: 'NuGet Tests: Build Tests (.NET CORE 3.0)'
+    inputs:
+      targetType: 'inline'
+      script: |
+        msbuild Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj /p:Platform=x64 /t:Restore
+        msbuild Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj /p:Platform=x64
+        msbuild Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj /p:Platform=AnyCpu /t:Restore
+        msbuild Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.csproj /p:Platform=AnyCpu
+      workingDirectory: $(Build.SourcesDirectory)\csharp\test\Microsoft.AI.MachineLearning.Tests.DotNetCore3_0
 
   - task: PowerShell@2
     displayName: 'NuGet Tests: Run Tests'
@@ -411,13 +452,19 @@ jobs:
         pushd .\Microsoft.AI.MachineLearning.Tests\x64\Debug
         .\Microsoft.AI.MachineLearning.Tests.exe
         popd
+        
+        Write-Host "Run Microsoft.AI.MachineLearning CSharp Tests (DotNetCore3_0)"
+        pushd .\Microsoft.AI.MachineLearning.Tests.DotNetCore3_0\bin\x64\Debug\netcoreapp3.0
+        .\Microsoft.AI.MachineLearning.Tests.DotNetCore3_0.exe
+        popd
+        
         Write-Host "Run Microsoft.AI.MachineLearning CSharp Tests (AnyCpu)"
-        pushd .\Microsoft.AI.MachineLearning.Tests.CSharp\bin\Debug
-        .\Microsoft.AI.MachineLearning.Tests.CSharp.exe
+        pushd .\Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2\bin\Debug
+        .\Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.exe
         popd
         Write-Host "Run Microsoft.AI.MachineLearning CSharp Tests (x64)"
-        pushd .\Microsoft.AI.MachineLearning.Tests.CSharp\bin\x64\Debug
-        .\Microsoft.AI.MachineLearning.Tests.CSharp.exe
+        pushd .\Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2\bin\x64\Debug
+        .\Microsoft.AI.MachineLearning.Tests.DotNetFramework4_7_2.exe
         popd
         Write-Host "Done!"
       workingDirectory: $(Build.SourcesDirectory)\csharp\test
diff --git a/tools/nuget/generate_nuspec_for_native_nuget.py b/tools/nuget/generate_nuspec_for_native_nuget.py
index 9b464add20..053e765f37 100644
--- a/tools/nuget/generate_nuspec_for_native_nuget.py
+++ b/tools/nuget/generate_nuspec_for_native_nuget.py
@@ -77,14 +77,17 @@ def generate_dependencies(list, package_name, version):
         # Support .Net Core
         list.append('<group targetFramework="NETCOREAPP">')
         list.append('<dependency id="Microsoft.Windows.SDK.NET"' + ' version="10.0.18362.3-preview"/>')
+        list.append('<dependency id="Microsoft.Windows.CsWinRT"' + ' version="0.1.0-prerelease.200629.3"/>')
         list.append('</group>')
         # Support .Net Standard
         list.append('<group targetFramework="NETSTANDARD">')
         list.append('<dependency id="Microsoft.Windows.SDK.NET"' + ' version="10.0.18362.3-preview"/>')
+        list.append('<dependency id="Microsoft.Windows.CsWinRT"' + ' version="0.1.0-prerelease.200629.3"/>')
         list.append('</group>')
         # Support .Net Framework
         list.append('<group targetFramework="NETFRAMEWORK">')
         list.append('<dependency id="Microsoft.Windows.SDK.NET"' + ' version="10.0.18362.3-preview"/>')
+        list.append('<dependency id="Microsoft.Windows.CsWinRT"' + ' version="0.1.0-prerelease.200629.3"/>')
         list.append('</group>')
         # UAP10.0.16299, This is the earliest release of the OS that supports .NET Standard apps
         list.append('<group targetFramework="UAP10.0.16299">')