diff --git a/eng/restore-toolset.ps1 b/eng/restore-toolset.ps1
index a266352db412..720c6de5b2e9 100644
--- a/eng/restore-toolset.ps1
+++ b/eng/restore-toolset.ps1
@@ -18,7 +18,7 @@ function InitializeCustomSDKToolset {
   InstallDotNetSharedFramework "1.0.5"
   InstallDotNetSharedFramework "1.1.2"
   InstallDotNetSharedFramework "2.1.0"
-  InstallDotNetSharedFramework "2.2.2"
+  InstallDotNetSharedFramework "2.2.3"
 
   CreateBuildEnvScript
   InstallNuget
diff --git a/eng/restore-toolset.sh b/eng/restore-toolset.sh
index 4c7f656c4b2d..7d71703492e5 100644
--- a/eng/restore-toolset.sh
+++ b/eng/restore-toolset.sh
@@ -13,7 +13,7 @@ function InitializeCustomSDKToolset {
   InstallDotNetSharedFramework "1.0.5"
   InstallDotNetSharedFramework "1.1.2"
   InstallDotNetSharedFramework "2.1.0"
-  InstallDotNetSharedFramework "2.2.2"
+  InstallDotNetSharedFramework "2.2.3"
 }
 
 # Installs additional shared frameworks for testing purposes
diff --git a/global.json b/global.json
index be46d57cb59b..d46605734bfb 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "tools": {
-    "dotnet": "3.0.100-preview3-010404",
+    "dotnet": "3.0.100-preview4-010564",
     "vs-opt": {
       "version": "15.9"
     }
diff --git a/src/Tasks/Microsoft.NET.Build.Tasks/ResolveAppHosts.cs b/src/Tasks/Microsoft.NET.Build.Tasks/ResolveAppHosts.cs
index 9a51cef83385..eb7e615dfe5a 100644
--- a/src/Tasks/Microsoft.NET.Build.Tasks/ResolveAppHosts.cs
+++ b/src/Tasks/Microsoft.NET.Build.Tasks/ResolveAppHosts.cs
@@ -202,12 +202,13 @@ private ITaskItem GetHostItem(string runtimeIdentifier,
 
                     packagesToDownload.Add(packageToDownload);
 
-                    appHostItem.SetMetadata(MetadataKeys.RuntimeIdentifier, runtimeIdentifier);
                     appHostItem.SetMetadata(MetadataKeys.PackageName, hostPackName);
                     appHostItem.SetMetadata(MetadataKeys.PackageVersion, appHostPackVersion);
-                    appHostItem.SetMetadata(MetadataKeys.RelativePath, hostRelativePathInPackage);
                 }
 
+                appHostItem.SetMetadata(MetadataKeys.RelativePath, hostRelativePathInPackage);
+                appHostItem.SetMetadata(MetadataKeys.RuntimeIdentifier, runtimeIdentifier);
+
                 return appHostItem;
             }
         }
diff --git a/src/Tasks/Microsoft.NET.Build.Tasks/ResolveRuntimePackAssets.cs b/src/Tasks/Microsoft.NET.Build.Tasks/ResolveRuntimePackAssets.cs
index f4247c8a3d6e..f5f9b2c23eee 100644
--- a/src/Tasks/Microsoft.NET.Build.Tasks/ResolveRuntimePackAssets.cs
+++ b/src/Tasks/Microsoft.NET.Build.Tasks/ResolveRuntimePackAssets.cs
@@ -71,6 +71,7 @@ void AddAsset(string assetPath, string assetType)
                         assetPath.EndsWith(".map", StringComparison.OrdinalIgnoreCase) ||
                         assetPath.EndsWith(".txt", StringComparison.OrdinalIgnoreCase) ||
                         assetPath.EndsWith(".xml", StringComparison.OrdinalIgnoreCase) ||
+                        assetPath.EndsWith(".json", StringComparison.OrdinalIgnoreCase) ||
                         assetPath.EndsWith("._", StringComparison.Ordinal))
                     {
                         //  Don't add assets for these files (shouldn't be necessary if/once we have a manifest in the runtime pack
diff --git a/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Sdk.DefaultItems.props b/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Sdk.DefaultItems.props
index 5cb165803e20..aba0dd58eb4b 100644
--- a/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Sdk.DefaultItems.props
+++ b/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Sdk.DefaultItems.props
@@ -17,17 +17,6 @@ Copyright (c) .NET Foundation. All rights reserved.
 
   <Import Project="$(NETCoreSdkBundledVersionsProps)" Condition="Exists('$(NETCoreSdkBundledVersionsProps)')" />
 
-  <ItemGroup Condition="'$(UseRefTargetingPacks)' == 'true'">
-    <KnownFrameworkReference Update="Microsoft.NETCore.App"
-                               TargetingPackName="Microsoft.NETCore.App.Ref"
-                               TargetingPackVersion="3.0.0-preview-27406-5"
-                               />
-    <KnownFrameworkReference Update="Microsoft.AspNetCore.App"
-                               TargetingPackName="Microsoft.AspNetCore.App.Ref"
-                               TargetingPackVersion="3.0.0-preview-19108-04"
-                               />
-  </ItemGroup>
-
   <PropertyGroup>
     <!-- Disable web SDK implicit package versions for ASP.NET packages, since the .NET SDK now handles that -->
     <EnableWebSdkImplicitPackageVersions>false</EnableWebSdkImplicitPackageVersions>
diff --git a/src/Tests/Microsoft.NET.Build.Tests/GivenFrameworkReferences.cs b/src/Tests/Microsoft.NET.Build.Tests/GivenFrameworkReferences.cs
index 6e79a5dcb522..c4203345062a 100644
--- a/src/Tests/Microsoft.NET.Build.Tests/GivenFrameworkReferences.cs
+++ b/src/Tests/Microsoft.NET.Build.Tests/GivenFrameworkReferences.cs
@@ -468,7 +468,6 @@ private ResolvedVersionInfo GetResolvedVersions(TestProject testProject,
             testProject.IsSdkProject = true;
             testProject.IsExe = true;
             testProject.AdditionalProperties["DisableImplicitFrameworkReferences"] = "true";
-            testProject.AdditionalProperties["UseRefTargetingPacks"] = "true";
             testProject.RuntimeIdentifier = EnvironmentInfo.GetCompatibleRid(testProject.TargetFrameworks);
 
             var testAsset = _testAssetsManager.CreateTestProject(testProject, callingMethod, identifier)
diff --git a/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToPreserveCompilationContext.cs b/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToPreserveCompilationContext.cs
index 417060611226..6dc6938c71bf 100644
--- a/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToPreserveCompilationContext.cs
+++ b/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToPreserveCompilationContext.cs
@@ -642,6 +642,7 @@ public void It_excludes_runtime_store_packages_from_the_refs_folder()
 System.Resources.Writer.dll
 System.Runtime.CompilerServices.VisualC.dll
 System.Runtime.dll
+System.Runtime.CompilerServices.Unsafe.dll
 System.Runtime.Extensions.dll
 System.Runtime.Handles.dll
 System.Runtime.InteropServices.dll