dotnet · jkotas · Mar 5, 2022 · Mar 4, 2022
diff --git a/docs/coding-guidelines/libraries-packaging.md b/docs/coding-guidelines/libraries-packaging.md
@@ -79,16 +79,16 @@ To include an analyzer in a package, simply add an `AnalyzerReference` item to t
 
 In the analyzer project make sure to do the following. Ensure it only targets `netstandard2.0` since this is a requirement of the compiler. Enable localization by setting `UsingToolXliff`. Set the `AnalyzerLanguage` property to either `cs` or `vb` if the analyzer is specific to that language. By default the analyzer will be packaged as language-agnostic. Avoid any dependencies in Analyzer projects that aren't already provided by the compiler.
 ```xml
-  <PropertyGroup> 
-    <TargetFrameworks>netstandard2.0</TargetFrameworks> 
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <UsingToolXliff>true</UsingToolXliff>
-    <AnalyzerLanguage>cs</AnalyzerLanguage> 
+    <AnalyzerLanguage>cs</AnalyzerLanguage>
   </PropertyGroup>
 ```
 
 In order to mitigate design-time/build-time performance issues with source generators, we generate build logic to allow the end user to disable the source generator from the package. By default, the MSBuild property an end user can set is named `Disable{PackageId}SourceGenerator`. If a package needs a custom property name, this can be overriden by setting the following property in the project that produces the package
 ```xml
-  <PropertyGroup> 
-    <DisableSourceGeneratorPropertyName>CustomPropertyName</DisableSourceGeneratorPropertyName> 
+  <PropertyGroup>
+    <DisableSourceGeneratorPropertyName>CustomPropertyName</DisableSourceGeneratorPropertyName>
   </PropertyGroup>
 ```
diff --git a/...oreclr/tools/aot/ILCompiler.Reflection.ReadyToRun/ILCompiler.Reflection.ReadyToRun.csproj b/...oreclr/tools/aot/ILCompiler.Reflection.ReadyToRun/ILCompiler.Reflection.ReadyToRun.csproj
@@ -8,7 +8,7 @@
     <AssemblyKey>Open</AssemblyKey>
     <IsDotNetFrameworkProductAssembly>true</IsDotNetFrameworkProductAssembly>
     <!-- ILSpy requires this assembly to target netstandard2.0 -->
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <CLSCompliant>false</CLSCompliant>
     <NoWarn>8002,NU1701</NoWarn>
     <RuntimeIdentifiers>win-x64;win-x86</RuntimeIdentifiers>

diff --git a/src/coreclr/tools/aot/ILCompiler.TypeSystem/ILCompiler.TypeSystem.csproj b/src/coreclr/tools/aot/ILCompiler.TypeSystem/ILCompiler.TypeSystem.csproj
@@ -4,7 +4,7 @@
     <RootNamespace>Internal.TypeSystem</RootNamespace>
     <AssemblyName>ILCompiler.TypeSystem</AssemblyName>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
     <Platforms>x64;x86</Platforms>
     <PlatformTarget>AnyCPU</PlatformTarget>

diff --git a/src/installer/tests/Assets/TestProjects/StandaloneApp6x/StandaloneApp6x.csproj b/src/installer/tests/Assets/TestProjects/StandaloneApp6x/StandaloneApp6x.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyName>StandaloneApp</AssemblyName>
-    <TargetFrameworks>net6.0</TargetFrameworks>
+    <TargetFramework>net6.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <RuntimeIdentifier>$(TestTargetRid)</RuntimeIdentifier>
   </PropertyGroup>

diff --git a/src/libraries/Common/tests/System/Xml/BaseLibManaged/BaseLibManaged.csproj b/src/libraries/Common/tests/System/Xml/BaseLibManaged/BaseLibManaged.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <RootNamespace>WebData.BaseLib</RootNamespace>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Globalization.cs" />
   </ItemGroup>
-</Project>
+</Project>
diff --git a/src/libraries/Common/tests/System/Xml/ModuleCore/ModuleCore.csproj b/src/libraries/Common/tests/System/Xml/ModuleCore/ModuleCore.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="cattrbase.cs" />

diff --git a/src/libraries/Common/tests/System/Xml/XmlDiff/XmlDiff.csproj b/src/libraries/Common/tests/System/Xml/XmlDiff/XmlDiff.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <RootNamespace>System.Xml.XmlDiff</RootNamespace>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="XmlDiff.cs" />

diff --git a/...osoft.Extensions.DependencyModel/tests/nonentrypointassembly/nonentrypointassembly.csproj b/...osoft.Extensions.DependencyModel/tests/nonentrypointassembly/nonentrypointassembly.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <EnableDefaultItems>true</EnableDefaultItems>
   </PropertyGroup>
 

diff --git a/src/libraries/Microsoft.Win32.Registry/tests/Microsoft.Win32.Registry.Tests.csproj b/src/libraries/Microsoft.Win32.Registry/tests/Microsoft.Win32.Registry.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <DefineConstants>$(DefineConstants);REGISTRY_ASSEMBLY</DefineConstants>
-    <TargetFrameworks>$(NetCoreAppCurrent)-windows</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-windows</TargetFramework>
     <EnableLibraryImportGenerator>true</EnableLibraryImportGenerator>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>

diff --git a/src/libraries/Microsoft.XmlSerializer.Generator/tests/SerializableAssembly.csproj b/src/libraries/Microsoft.XmlSerializer.Generator/tests/SerializableAssembly.csproj
@@ -4,7 +4,7 @@
     SGen on the test assembly itself, everytime we move the shared framework assemblies to VNext.0.0
     or to target a new TFM, since we use the SDK to invoke SGen and there is no recent SDK with
     VNext.0.0 then SGen fails when it tries to load the types to serialize. -->
-    <TargetFrameworks>netstandard2.1</TargetFrameworks>
+    <TargetFramework>netstandard2.1</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

diff --git a/...entModel.Composition.Noop.Assembly/System.ComponentModel.Composition.Noop.Assembly.csproj b/...entModel.Composition.Noop.Assembly/System.ComponentModel.Composition.Noop.Assembly.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="TestClass.cs" />

diff --git a/...es/System.Diagnostics.StackTrace/tests/ExceptionTestAssembly/ExceptionTestAssembly.csproj b/...es/System.Diagnostics.StackTrace/tests/ExceptionTestAssembly/ExceptionTestAssembly.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <DebugType>None</DebugType>
   </PropertyGroup>
   <ItemGroup>

diff --git a/....Globalization.Extensions/tests/NlsTests/System.Globalization.Extensions.Nls.Tests.csproj b/....Globalization.Extensions/tests/NlsTests/System.Globalization.Extensions.Nls.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>$(NetCoreAppCurrent)-windows</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-windows</TargetFramework>
     <TestRuntime>true</TestRuntime>
   </PropertyGroup>
   <ItemGroup>

diff --git a/src/libraries/System.Globalization/tests/NlsTests/System.Globalization.Nls.Tests.csproj b/src/libraries/System.Globalization/tests/NlsTests/System.Globalization.Nls.Tests.csproj
@@ -4,7 +4,7 @@
     <TestRuntime>true</TestRuntime>
     <IncludeRemoteExecutor>true</IncludeRemoteExecutor>
     <!-- This test project is Windows only as it forces the use of NLS as the Globlaization platform -->
-    <TargetFrameworks>$(NetCoreAppCurrent)-windows</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-windows</TargetFramework>
     <UnicodeUcdVersion>13.0</UnicodeUcdVersion>
   </PropertyGroup>
   <ItemGroup>

diff --git a/.../System.IO.FileSystem.AccessControl/tests/System.IO.FileSystem.AccessControl.Tests.csproj b/.../System.IO.FileSystem.AccessControl/tests/System.IO.FileSystem.AccessControl.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>$(NetCoreAppCurrent)-windows</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-windows</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="DirectoryObjectSecurityTests.cs" />

diff --git a/...stem/tests/DisabledFileLockingTests/System.IO.FileSystem.DisabledFileLocking.Tests.csproj b/...stem/tests/DisabledFileLockingTests/System.IO.FileSystem.DisabledFileLocking.Tests.csproj
@@ -4,7 +4,7 @@
     <IncludeRemoteExecutor>true</IncludeRemoteExecutor>
     <EnableLibraryImportGenerator>true</EnableLibraryImportGenerator>
     <!-- file locking can't be disabled on Windows -->
-    <TargetFrameworks>$(NetCoreAppCurrent)-Unix</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-Unix</TargetFramework>
 
     <WasmXHarnessMonoArgs>--working-dir=/test-dir</WasmXHarnessMonoArgs>
   </PropertyGroup>

diff --git a/src/libraries/System.IO.Pipes.AccessControl/tests/System.IO.Pipes.AccessControl.Tests.csproj b/src/libraries/System.IO.Pipes.AccessControl/tests/System.IO.Pipes.AccessControl.Tests.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>$(NetCoreAppCurrent)-windows</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-windows</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <AssembliesBeingTested Include="System.IO.Pipes" />

diff --git a/....Net.Http.WinHttpHandler/tests/UnitTests/System.Net.Http.WinHttpHandler.Unit.Tests.csproj b/....Net.Http.WinHttpHandler/tests/UnitTests/System.Net.Http.WinHttpHandler.Unit.Tests.csproj
@@ -3,7 +3,7 @@
     <NoWarn>$(NoWarn);0436</NoWarn>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <StringResourcesPath>../../src/Resources/Strings.resx</StringResourcesPath>
-    <TargetFrameworks>$(NetCoreAppCurrent)-windows</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-windows</TargetFramework>
     <DefineConstants>UNITTEST</DefineConstants>
     <EnableLibraryImportGenerator>true</EnableLibraryImportGenerator>
     <Nullable>annotations</Nullable>

diff --git a/...es/System.Net.WebSockets.Client/tests/wasm/System.Net.WebSockets.Client.Wasm.Tests.csproj b/...es/System.Net.WebSockets.Client/tests/wasm/System.Net.WebSockets.Client.Wasm.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <StringResourcesPath>../../src/Resources/Strings.resx</StringResourcesPath>
-    <TargetFrameworks>$(NetCoreAppCurrent)-Browser</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-Browser</TargetFramework>
     <DefineConstants>$(DefineConstants);NETSTANDARD</DefineConstants>
   </PropertyGroup>
 

diff --git a/...e.InteropServices.JavaScript/src/System.Private.Runtime.InteropServices.JavaScript.csproj b/...e.InteropServices.JavaScript/src/System.Private.Runtime.InteropServices.JavaScript.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <Nullable>enable</Nullable>
-    <TargetFrameworks>$(NetCoreAppCurrent)-Browser</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-Browser</TargetFramework>
     <NoWarn>$(NoWarn);CA1419</NoWarn> <!-- // TODO https://github.com/dotnet/roslyn-analyzers/issues/5232: not intended for use with P/Invoke -->
   </PropertyGroup>
   <ItemGroup>

diff --git a/...pServices.JavaScript/tests/System.Private.Runtime.InteropServices.JavaScript.Tests.csproj b/...pServices.JavaScript/tests/System.Private.Runtime.InteropServices.JavaScript.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>$(NetCoreAppCurrent)-Browser</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-Browser</TargetFramework>
     <TestRuntime>true</TestRuntime>
     <WasmXHarnessArgs>$(WasmXHarnessArgs) --engine-arg=--expose-gc --web-server-use-cop</WasmXHarnessArgs>
   </PropertyGroup>

diff --git a/.../System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/XDocument.Test.ModuleCore.csproj b/.../System.Private.Xml.Linq/tests/XDocument.Test.ModuleCore/XDocument.Test.ModuleCore.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="interop.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_0_0_0_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_0_0_0_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>0.0.0.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_0_0_0_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_0_0_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_0_0_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.0.0.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_0_0_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_0_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_0_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.1.0.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_1_0_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_1_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_1_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.1.1.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_1_1_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_1_2.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_1_2.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.1.1.2</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_1_1_2.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_1_3.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_1_3.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.1.1.3</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_1_1_3.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_2_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_2_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.1.2.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_1_2_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_3_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_1_3_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.1.3.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_1_3_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_2_0_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_2_0_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.2.0.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_2_0_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_3_0_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_1_3_0_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>1.3.0.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_1_3_0_0.cs" />

diff --git a/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_3_0_0_0.csproj b/...s/System.Reflection/tests/AssemblyVersion/System.Reflection.Tests.Assembly_3_0_0_0.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AssemblyVersion>3.0.0.0</AssemblyVersion>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Program_3_0_0_0.cs" />

diff --git a/src/libraries/System.Reflection/tests/ForwardedTypesAssembly/ForwardedTypesAssembly.csproj b/src/libraries/System.Reflection/tests/ForwardedTypesAssembly/ForwardedTypesAssembly.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="ForwardedTypesAssembly.cs" />

diff --git a/src/libraries/System.Reflection/tests/TestAssembly/TestAssembly.csproj b/src/libraries/System.Reflection/tests/TestAssembly/TestAssembly.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="TestAssembly.cs" />

diff --git a/src/libraries/System.Reflection/tests/UnloadableAssembly/UnloadableAssembly.csproj b/src/libraries/System.Reflection/tests/UnloadableAssembly/UnloadableAssembly.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="UnloadableAssembly.cs" />

diff --git a/.../System.Runtime.CompilerServices.Unsafe/ref/System.Runtime.CompilerServices.Unsafe.csproj b/.../System.Runtime.CompilerServices.Unsafe/ref/System.Runtime.CompilerServices.Unsafe.csproj
@@ -1,10 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>$(NetCoreAppCurrent)</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
     <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="System.Runtime.CompilerServices.Unsafe.Forwards.cs" />
     <ProjectReference Include="..\..\System.Runtime\ref\System.Runtime.csproj" />
   </ItemGroup>
-</Project>
+</Project>
diff --git a/.../System.Runtime.CompilerServices.Unsafe/src/System.Runtime.CompilerServices.Unsafe.csproj b/.../System.Runtime.CompilerServices.Unsafe/src/System.Runtime.CompilerServices.Unsafe.csproj
@@ -3,10 +3,10 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <IsPartialFacadeAssembly>true</IsPartialFacadeAssembly>
     <ExcludeResourcesImport>true</ExcludeResourcesImport>
-    <TargetFrameworks>$(NetCoreAppCurrent)</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
     <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="$(CoreLibProject)" />
   </ItemGroup>
-</Project>
+</Project>
diff --git a/...Runtime.CompilerServices.Unsafe/tests/System.Runtime.CompilerServices.Unsafe.Tests.csproj b/...Runtime.CompilerServices.Unsafe/tests/System.Runtime.CompilerServices.Unsafe.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>$(NetCoreAppCurrent)</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="UnsafeTests.cs" />

diff --git a/...ries/System.Runtime.Extensions/tests/AssemblyResolveTestApp/AssemblyResolveTestApp.csproj b/...ries/System.Runtime.Extensions/tests/AssemblyResolveTestApp/AssemblyResolveTestApp.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <TargetFrameworks>netstandard2.0</TargetFrameworks>
+    <TargetFramework>netstandard2.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="Class1.cs" />

diff --git a/...ambdaRegression/System.Reflection.Metadata.ApplyUpdate.Test.StaticLambdaRegression.csproj b/...ambdaRegression/System.Reflection.Metadata.ApplyUpdate.Test.StaticLambdaRegression.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <RootNamespace>System.Runtime.Loader.Tests</RootNamespace>
-    <TargetFrameworks>$(NetCoreAppCurrent)</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
     <TestRuntime>true</TestRuntime>
     <DeltaScript>deltascript.json</DeltaScript>
   </PropertyGroup>

diff --git a/src/libraries/System.Runtime/tests/NlsTests/System.Runtime.Nls.Tests.csproj b/src/libraries/System.Runtime/tests/NlsTests/System.Runtime.Nls.Tests.csproj
@@ -3,7 +3,7 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <TestRuntime>true</TestRuntime>
     <IncludeRemoteExecutor>true</IncludeRemoteExecutor>
-    <TargetFrameworks>$(NetCoreAppCurrent)-windows</TargetFrameworks>
+    <TargetFramework>$(NetCoreAppCurrent)-windows</TargetFramework>
     <NoWarn>$(NoWarn),SYSLIB0013</NoWarn>
   </PropertyGroup>
   <ItemGroup>