diff --git a/eng/Workarounds.targets b/eng/Workarounds.targets
index 0e2159fd3c25..4a00c1786bee 100644
--- a/eng/Workarounds.targets
+++ b/eng/Workarounds.targets
@@ -40,17 +40,22 @@
     <PackageReference Include="Internal.AspNetCore.BuildTasks" PrivateAssets="All" Version="$(InternalAspNetCoreBuildTasksPackageVersion)" IsImplicitlyDefined="true" />
   </ItemGroup>
 
+  <PropertyGroup>
+    <KnownAppHostPackOrFrameworkReferenceTfm>$(DefaultNetCoreTargetFramework)</KnownAppHostPackOrFrameworkReferenceTfm>
+    <KnownAppHostPackOrFrameworkReferenceTfm Condition="'$(KnownAppHostPackOrFrameworkReferenceTfm)' == 'net5.0'">netcoreapp5.0</KnownAppHostPackOrFrameworkReferenceTfm>
+  </PropertyGroup>
+
   <ItemGroup>
-    <!-- Workaround when there is no vNext SDK available, copy known apphost/framework reference info from 3.0 -->
+    <!-- Workaround when there is no vNext SDK available, copy known apphost/framework reference info from 3.1 -->
     <KnownAppHostPack
-      Include="@(KnownAppHostPack->WithMetadataValue('TargetFramework', 'netcoreapp3.0'))"
-      TargetFramework="$(DefaultNetCoreTargetFramework)"
-      Condition="@(KnownAppHostPack->Count()) != '0' AND !(@(KnownAppHostPack->AnyHaveMetadataValue('TargetFramework', '$(DefaultNetCoreTargetFramework)')))"
+      Include="@(KnownAppHostPack->WithMetadataValue('TargetFramework', 'netcoreapp3.1'))"
+      TargetFramework="$(KnownAppHostPackOrFrameworkReferenceTfm)"
+      Condition="@(KnownAppHostPack->Count()) != '0' AND !(@(KnownAppHostPack->AnyHaveMetadataValue('TargetFramework', '$(KnownAppHostPackOrFrameworkReferenceTfm)')))"
       />
     <KnownFrameworkReference
-      Include="@(KnownFrameworkReference->WithMetadataValue('TargetFramework', 'netcoreapp3.0'))"
-      TargetFramework="$(DefaultNetCoreTargetFramework)"
-      Condition="@(KnownFrameworkReference->Count()) != '0' AND !(@(KnownFrameworkReference->AnyHaveMetadataValue('TargetFramework', '$(DefaultNetCoreTargetFramework)')))"
+      Include="@(KnownFrameworkReference->WithMetadataValue('TargetFramework', 'netcoreapp3.1'))"
+      TargetFramework="$(KnownAppHostPackOrFrameworkReferenceTfm)"
+      Condition="@(KnownFrameworkReference->Count()) != '0' AND !(@(KnownFrameworkReference->AnyHaveMetadataValue('TargetFramework', '$(KnownAppHostPackOrFrameworkReferenceTfm)')))"
       />
   </ItemGroup>
 
diff --git a/global.json b/global.json
index dee19df73dff..ce64ce891e29 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,8 @@
 {
   "sdk": {
-    "version": "5.0.100-preview.5.20251.2"
+    "version": "5.0.100-preview.5.20251.2",
+    "allowPrerelease": true,
+    "rollForward": "major"
   },
   "tools": {
     "dotnet": "5.0.100-preview.5.20251.2",
@@ -15,7 +17,7 @@
     "Git": "2.22.0",
     "jdk": "11.0.3",
     "vs": {
-      "version": "16.3",
+      "version": "16.5",
       "components": [
         "Microsoft.VisualStudio.Component.VC.ATL",
         "Microsoft.VisualStudio.Component.VC.Tools.x86.x64",
diff --git a/src/ProjectTemplates/BlazorWasm.ProjectTemplates/content/BlazorWasm-CSharp/.template.config/template.json b/src/ProjectTemplates/BlazorWasm.ProjectTemplates/content/BlazorWasm-CSharp/.template.config/template.json
index e49f99528931..29d5eef17448 100644
--- a/src/ProjectTemplates/BlazorWasm.ProjectTemplates/content/BlazorWasm-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/BlazorWasm.ProjectTemplates/content/BlazorWasm-CSharp/.template.config/template.json
@@ -85,12 +85,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "HostIdentifier": {
       "type": "bind",
diff --git a/src/ProjectTemplates/Directory.Build.props b/src/ProjectTemplates/Directory.Build.props
index c97ca68bd06c..8b6266a4ff74 100644
--- a/src/ProjectTemplates/Directory.Build.props
+++ b/src/ProjectTemplates/Directory.Build.props
@@ -2,6 +2,9 @@
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory)..\, Directory.Build.props))\Directory.Build.props" />
 
   <PropertyGroup>
+    <!-- TODO: Remove this when alls parts of aspnetcore switched to the net5.0 TFM. -->
+    <DefaultNetCoreTargetFramework>net5.0</DefaultNetCoreTargetFramework>
+
     <!-- The .csproj files in this folder do not actually produce .dll's. They are only present to produce .nupkgs and enable Visual Studio support -->
     <IsProjectReferenceProvider>false</IsProjectReferenceProvider>
     <HasReferenceAssembly>false</HasReferenceAssembly>
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/.template.config/template.json
index 66bfdc777bb2..484e81863cd8 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/.template.config/template.json
@@ -337,12 +337,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-CSharp/.template.config/template.json
index caf1ab80e607..9964a3ae5a5a 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-CSharp/.template.config/template.json
@@ -86,12 +86,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-FSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-FSharp/.template.config/template.json
index df7b62a1697b..9f436eba9c3e 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-FSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/EmptyWeb-FSharp/.template.config/template.json
@@ -82,12 +82,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/GrpcService-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/GrpcService-CSharp/.template.config/template.json
index 0ca933164a50..7c9acda73b39 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/GrpcService-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/GrpcService-CSharp/.template.config/template.json
@@ -41,11 +41,11 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "defaultValue": "netcoreapp5.0"
+      "defaultValue": "net5.0"
     },
     "ExcludeLaunchSettings": {
       "type": "parameter",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/RazorClassLibrary-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/RazorClassLibrary-CSharp/.template.config/template.json
index 543e0bdd5dd9..5a6a957a2ca7 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/RazorClassLibrary-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/RazorClassLibrary-CSharp/.template.config/template.json
@@ -47,11 +47,11 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "defaultValue": "netcoreapp5.0"
+      "defaultValue": "net5.0"
     },
     "HostIdentifier": {
       "type": "bind",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/.template.config/template.json
index 81aacfa7e7b4..a98d4dcf6c56 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/.template.config/template.json
@@ -316,12 +316,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/.template.config/template.json
index d846394fa943..9fabeb1cc414 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/.template.config/template.json
@@ -306,12 +306,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-FSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-FSharp/.template.config/template.json
index 779cf7d82c17..6988370f4eb2 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-FSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-FSharp/.template.config/template.json
@@ -87,12 +87,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/template.json
index 9c560017be7a..731fcbcb0fa7 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/template.json
@@ -209,12 +209,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-FSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-FSharp/.template.config/template.json
index b3f4e81300f7..d9d9cf819322 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-FSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-FSharp/.template.config/template.json
@@ -82,12 +82,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/Worker-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.ProjectTemplates/content/Worker-CSharp/.template.config/template.json
index fa3775c56451..fdffe3815f25 100644
--- a/src/ProjectTemplates/Web.ProjectTemplates/content/Worker-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.ProjectTemplates/content/Worker-CSharp/.template.config/template.json
@@ -47,12 +47,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "copyrightYear": {
       "type": "generated",
diff --git a/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/Angular-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/Angular-CSharp/.template.config/template.json
index fb376267c2c8..1a26e86718a6 100644
--- a/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/Angular-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/Angular-CSharp/.template.config/template.json
@@ -177,12 +177,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "HostIdentifier": {
       "type": "bind",
diff --git a/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/React-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/React-CSharp/.template.config/template.json
index 4b2e6ad78671..24854b9c5631 100644
--- a/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/React-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/React-CSharp/.template.config/template.json
@@ -178,12 +178,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "HostIdentifier": {
       "type": "bind",
diff --git a/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/.template.config/template.json b/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/.template.config/template.json
index f32b4adac42d..935a599725d4 100644
--- a/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/.template.config/template.json
+++ b/src/ProjectTemplates/Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/.template.config/template.json
@@ -87,12 +87,12 @@
       "datatype": "choice",
       "choices": [
         {
-          "choice": "netcoreapp5.0",
-          "description": "Target netcoreapp5.0"
+          "choice": "net5.0",
+          "description": "Target net5.0"
         }
       ],
-      "replaces": "netcoreapp5.0",
-      "defaultValue": "netcoreapp5.0"
+      "replaces": "net5.0",
+      "defaultValue": "net5.0"
     },
     "HostIdentifier": {
       "type": "bind",
diff --git a/src/ProjectTemplates/build.cmd b/src/ProjectTemplates/build.cmd
index b5aa28c66337..7010509e0ad3 100644
--- a/src/ProjectTemplates/build.cmd
+++ b/src/ProjectTemplates/build.cmd
@@ -1,3 +1,3 @@
 @ECHO OFF
 SET RepoRoot=%~dp0..\..
-%RepoRoot%\build.cmd -projects %~dp0*\*.*proj "/p:EnforceE2ETestPrerequisites=true" %*
+%RepoRoot%\build.cmd -projects %~dp0*\*.*proj -ForceCoreMsbuild "/p:EnforceE2ETestPrerequisites=true" %*