diff --git a/Avalonia.sln b/Avalonia.sln
index 1233e603d7..6f9e81b44a 100644
--- a/Avalonia.sln
+++ b/Avalonia.sln
@@ -166,6 +166,9 @@ Global
 		src\Shared\RenderHelpers\RenderHelpers.projitems*{3c4c0cb4-0c0f-4450-a37b-148c84ff905f}*SharedItemsImports = 13
 		src\Shared\RenderHelpers\RenderHelpers.projitems*{3e908f67-5543-4879-a1dc-08eace79b3cd}*SharedItemsImports = 4
 		src\Windows\Avalonia.Win32\Avalonia.Win32.Shared.projitems*{40759a76-d0f2-464e-8000-6ff0f5c4bd7c}*SharedItemsImports = 4
+		src\Shared\PlatformSupport\PlatformSupport.projitems*{4488ad85-1495-4809-9aa4-ddfe0a48527e}*SharedItemsImports = 4
+		src\Shared\RenderHelpers\RenderHelpers.projitems*{47be08a7-5985-410b-9ffc-2264b8ea595f}*SharedItemsImports = 4
+		src\Skia\Avalonia.Skia\Avalonia.Skia.projitems*{47be08a7-5985-410b-9ffc-2264b8ea595f}*SharedItemsImports = 4
 		tests\Avalonia.RenderTests\Avalonia.RenderTests.projitems*{48840edd-24bf-495d-911e-2eb12ae75d3b}*SharedItemsImports = 13
 		src\Shared\PlatformSupport\PlatformSupport.projitems*{4a1abb09-9047-4bd5-a4ad-a055e52c5ee0}*SharedItemsImports = 4
 		src\Shared\PlatformSupport\PlatformSupport.projitems*{7863ea94-f0fb-4386-bf8c-e5bfa761560a}*SharedItemsImports = 4
@@ -176,6 +179,8 @@ Global
 		src\Shared\RenderHelpers\RenderHelpers.projitems*{925dd807-b651-475f-9f7c-cbeb974ce43d}*SharedItemsImports = 4
 		src\Skia\Avalonia.Skia\Avalonia.Skia.projitems*{925dd807-b651-475f-9f7c-cbeb974ce43d}*SharedItemsImports = 4
 		src\Windows\Avalonia.Win32\Avalonia.Win32.Shared.projitems*{9defc6b7-845b-4d8f-afc0-d32bf0032b8c}*SharedItemsImports = 13
+		src\Shared\RenderHelpers\RenderHelpers.projitems*{bd43f7c0-396b-4aa1-bad9-dfde54d51298}*SharedItemsImports = 4
+		src\Skia\Avalonia.Skia\Avalonia.Skia.projitems*{bd43f7c0-396b-4aa1-bad9-dfde54d51298}*SharedItemsImports = 4
 		tests\Avalonia.RenderTests\Avalonia.RenderTests.projitems*{d35a9f3d-8bb0-496e-bf72-444038a7debb}*SharedItemsImports = 4
 		tests\Avalonia.RenderTests\Avalonia.RenderTests.projitems*{dabfd304-d6a4-4752-8123-c2ccf7ac7831}*SharedItemsImports = 4
 		tests\Avalonia.RenderTests\Avalonia.RenderTests.projitems*{e106cf37-4066-4615-b684-172a6d30b058}*SharedItemsImports = 4
diff --git a/samples/ControlCatalog.Android/ControlCatalog.Android.csproj b/samples/ControlCatalog.Android/ControlCatalog.Android.csproj
index 05553a5dbf..2f32a0b5ee 100644
--- a/samples/ControlCatalog.Android/ControlCatalog.Android.csproj
+++ b/samples/ControlCatalog.Android/ControlCatalog.Android.csproj
@@ -73,7 +73,6 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="GettingStarted.Xamarin" />
     <None Include="Resources\AboutResources.txt" />
     <None Include="Assets\AboutAssets.txt" />
   </ItemGroup>
diff --git a/samples/ControlCatalog.Android/GettingStarted.Xamarin b/samples/ControlCatalog.Android/GettingStarted.Xamarin
deleted file mode 100644
index e9d4f6a411..0000000000
--- a/samples/ControlCatalog.Android/GettingStarted.Xamarin
+++ /dev/null
@@ -1,4 +0,0 @@
-<GettingStarted>
-	<LocalContent>GS\Android\CS\AndroidApp\GettingStarted.html</LocalContent>
-	<EmbeddedNavigation>false</EmbeddedNavigation>
-</GettingStarted>
\ No newline at end of file
diff --git a/src/Gtk/Avalonia.Gtk3/.gitignore b/src/Gtk/Avalonia.Gtk3/.gitignore
deleted file mode 100644
index ddb0c6248b..0000000000
--- a/src/Gtk/Avalonia.Gtk3/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-project.lock.json
\ No newline at end of file
diff --git a/src/Gtk/Avalonia.Gtk3/Avalonia.Gtk3.csproj b/src/Gtk/Avalonia.Gtk3/Avalonia.Gtk3.csproj
index d16e9e0521..1874d92f4d 100644
--- a/src/Gtk/Avalonia.Gtk3/Avalonia.Gtk3.csproj
+++ b/src/Gtk/Avalonia.Gtk3/Avalonia.Gtk3.csproj
@@ -23,10 +23,6 @@
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
-  <ItemGroup>
-    <!-- A reference to the entire .NET Framework is automatically included -->
-    <None Include="project.json" />
-  </ItemGroup>
   <ItemGroup>
     <Compile Include="..\Avalonia.Gtk\KeyTransform.cs">
       <Link>KeyTransform.cs</Link>
diff --git a/src/Gtk/Avalonia.Gtk3/project.json b/src/Gtk/Avalonia.Gtk3/project.json
deleted file mode 100644
index 7af946da1a..0000000000
--- a/src/Gtk/Avalonia.Gtk3/project.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "supports": {},
-  "dependencies": {
-    "Microsoft.NETCore.Portable.Compatibility": "1.0.1",
-    "NETStandard.Library": "1.6.0"
-  },
-  "frameworks": {
-    "netstandard1.1": {}
-  }
-}
\ No newline at end of file
diff --git a/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj b/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj
index c0e807f966..ff72edab11 100644
--- a/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj
+++ b/tests/Avalonia.Controls.UnitTests/Avalonia.Controls.UnitTests.csproj
@@ -34,5 +34,4 @@
   <ItemGroup>
     <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
   </ItemGroup>
-  <Import Project="$(MSBuildThisFileDirectory)..\..\src\Shared\nuget.workaround.targets" />
 </Project>
\ No newline at end of file
diff --git a/tests/Avalonia.DesignerSupport.Tests/Checker.cs b/tests/Avalonia.DesignerSupport.Tests/Checker.cs
index 9d761689e7..5e71c85e6f 100644
--- a/tests/Avalonia.DesignerSupport.Tests/Checker.cs
+++ b/tests/Avalonia.DesignerSupport.Tests/Checker.cs
@@ -23,7 +23,7 @@ namespace Avalonia.DesignerSupport.Tests
                 {
                     Assembly.LoadFrom(asm);
                 }
-                catch (Exception e)
+                catch (Exception)
                 {
                 }
             var dic = new Dictionary<string, object>();
diff --git a/tests/Avalonia.RenderTests/Avalonia.Cairo.RenderTests.csproj b/tests/Avalonia.RenderTests/Avalonia.Cairo.RenderTests.csproj
index fed9e121e5..e2aafb1464 100644
--- a/tests/Avalonia.RenderTests/Avalonia.Cairo.RenderTests.csproj
+++ b/tests/Avalonia.RenderTests/Avalonia.Cairo.RenderTests.csproj
@@ -74,7 +74,6 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
-    <None Include="packages.Avalonia.Cairo.RenderTests.config" />
   </ItemGroup>
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
diff --git a/tests/Avalonia.RenderTests/Avalonia.Direct2D1.RenderTests.csproj b/tests/Avalonia.RenderTests/Avalonia.Direct2D1.RenderTests.csproj
index 32a27e1f23..29a1dcec0f 100644
--- a/tests/Avalonia.RenderTests/Avalonia.Direct2D1.RenderTests.csproj
+++ b/tests/Avalonia.RenderTests/Avalonia.Direct2D1.RenderTests.csproj
@@ -74,7 +74,6 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
-    <None Include="packages.Avalonia.Direct2D1.RenderTests.config" />
   </ItemGroup>
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
diff --git a/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj b/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj
index 9a71c70322..e45ecce07e 100644
--- a/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj
+++ b/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj
@@ -21,7 +21,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'net461'">
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Xml.Linq" />
diff --git a/tests/coretests.props b/tests/coretests.props
index ab9d865b48..590017c025 100644
--- a/tests/coretests.props
+++ b/tests/coretests.props
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
     <PropertyGroup>
         <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
         <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>