diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index f854dee6c0a2..e1baa5002078 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -296,22 +296,22 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>770d630b283ec1be4a8ed41ac78e13ec1fd957b1</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="6.0.0-beta.21311.3">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="6.0.0-beta.21355.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>4a2b475948d498b89fedef7cf890883f49bc1ea3</Sha>
+      <Sha>615fbd8c498067deae160a696701eaf33155da56</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Installers" Version="6.0.0-beta.21311.3">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Installers" Version="6.0.0-beta.21355.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>4a2b475948d498b89fedef7cf890883f49bc1ea3</Sha>
+      <Sha>615fbd8c498067deae160a696701eaf33155da56</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Templating" Version="6.0.0-beta.21311.3">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Templating" Version="6.0.0-beta.21355.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>4a2b475948d498b89fedef7cf890883f49bc1ea3</Sha>
+      <Sha>615fbd8c498067deae160a696701eaf33155da56</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="6.0.0-beta.21311.3">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="6.0.0-beta.21355.2">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>4a2b475948d498b89fedef7cf890883f49bc1ea3</Sha>
+      <Sha>615fbd8c498067deae160a696701eaf33155da56</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/Versions.props b/eng/Versions.props
index 4fa615419c03..dfd7c94a55d1 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -138,8 +138,8 @@
     <MicrosoftEntityFrameworkCoreVersion>6.0.0-preview.6.21352.1</MicrosoftEntityFrameworkCoreVersion>
     <MicrosoftEntityFrameworkCoreDesignVersion>6.0.0-preview.6.21352.1</MicrosoftEntityFrameworkCoreDesignVersion>
     <!-- Packages from dotnet/arcade -->
-    <MicrosoftDotNetBuildTasksInstallersVersion>6.0.0-beta.21311.3</MicrosoftDotNetBuildTasksInstallersVersion>
-    <MicrosoftDotNetBuildTasksTemplatingVersion>6.0.0-beta.21311.3</MicrosoftDotNetBuildTasksTemplatingVersion>
+    <MicrosoftDotNetBuildTasksInstallersVersion>6.0.0-beta.21355.2</MicrosoftDotNetBuildTasksInstallersVersion>
+    <MicrosoftDotNetBuildTasksTemplatingVersion>6.0.0-beta.21355.2</MicrosoftDotNetBuildTasksTemplatingVersion>
   </PropertyGroup>
   <!--
 
diff --git a/eng/common/SetupNugetSources.ps1 b/eng/common/SetupNugetSources.ps1
index a0b5fc37f438..18823840b112 100644
--- a/eng/common/SetupNugetSources.ps1
+++ b/eng/common/SetupNugetSources.ps1
@@ -158,4 +158,10 @@ if ($dotnet5Source -ne $null) {
     AddPackageSource -Sources $sources -SourceName "dotnet5-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet5-internal-transport/nuget/v2" -Creds $creds -Username $userName -Password $Password
 }
 
+$dotnet6Source = $sources.SelectSingleNode("add[@key='dotnet6']")
+if ($dotnet6Source -ne $null) {
+    AddPackageSource -Sources $sources -SourceName "dotnet6-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet6-internal/nuget/v2" -Creds $creds -Username $userName -Password $Password
+    AddPackageSource -Sources $sources -SourceName "dotnet6-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet6-internal-transport/nuget/v2" -Creds $creds -Username $userName -Password $Password
+}
+
 $doc.Save($filename)
diff --git a/eng/common/SetupNugetSources.sh b/eng/common/SetupNugetSources.sh
index 2734601c13c4..ad3fb74fd2cc 100755
--- a/eng/common/SetupNugetSources.sh
+++ b/eng/common/SetupNugetSources.sh
@@ -129,6 +129,30 @@ if [ "$?" == "0" ]; then
     PackageSources+=('dotnet5-internal-transport')
 fi
 
+# Ensure dotnet6-internal and dotnet6-internal-transport are in the packageSources if the public dotnet6 feeds are present
+grep -i "<add key=\"dotnet6\"" $ConfigFile
+if [ "$?" == "0" ]; then
+    grep -i "<add key=\"dotnet6-internal\"" $ConfigFile
+    if [ "$?" != "0" ]; then
+        echo "Adding dotnet6-internal to the packageSources."
+        PackageSourcesNodeFooter="</packageSources>"
+        PackageSourceTemplate="${TB}<add key=\"dotnet6-internal\" value=\"https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet6-internal/nuget/v2\" />"
+
+        sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourceTemplate${NL}$PackageSourcesNodeFooter|" $ConfigFile
+    fi
+    PackageSources+=('dotnet6-internal')
+
+    grep -i "<add key=\"dotnet6-internal-transport\">" $ConfigFile
+    if [ "$?" != "0" ]; then
+        echo "Adding dotnet6-internal-transport to the packageSources."
+        PackageSourcesNodeFooter="</packageSources>"
+        PackageSourceTemplate="${TB}<add key=\"dotnet6-internal-transport\" value=\"https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet6-internal-transport/nuget/v2\" />"
+
+        sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourceTemplate${NL}$PackageSourcesNodeFooter|" $ConfigFile
+    fi
+    PackageSources+=('dotnet6-internal-transport')
+fi
+
 # I want things split line by line
 PrevIFS=$IFS
 IFS=$'\n'
diff --git a/eng/common/generate-locproject.ps1 b/eng/common/generate-locproject.ps1
index de348a2e225c..25e97ac00772 100644
--- a/eng/common/generate-locproject.ps1
+++ b/eng/common/generate-locproject.ps1
@@ -25,8 +25,15 @@ Push-Location "$SourcesDirectory" # push location for Resolve-Path -Relative to
 
 # Template files
 $jsonFiles = @()
-$jsonFiles += Get-ChildItem -Recurse -Path "$SourcesDirectory" | Where-Object { $_.FullName -Match "\.template\.config\\localize\\en\..+\.json" } # .NET templating pattern
-$jsonFiles += Get-ChildItem -Recurse -Path "$SourcesDirectory" | Where-Object { $_.FullName -Match "en\\strings\.json" } # current winforms pattern
+$jsonTemplateFiles = Get-ChildItem -Recurse -Path "$SourcesDirectory" | Where-Object { $_.FullName -Match "\.template\.config\\localize\\.+\.en\.json" } # .NET templating pattern
+$jsonTemplateFiles | ForEach-Object {
+    $null = $_.Name -Match "(.+)\.[\w-]+\.json" # matches '[filename].[langcode].json
+    
+    $destinationFile = "$($_.Directory.FullName)\$($Matches.1).json"
+    $jsonFiles += Copy-Item "$($_.FullName)" -Destination $destinationFile -PassThru
+}
+
+$jsonWinformsTemplateFiles = Get-ChildItem -Recurse -Path "$SourcesDirectory" | Where-Object { $_.FullName -Match "en\\strings\.json" } # current winforms pattern
 
 $xlfFiles = @()
 
@@ -44,7 +51,7 @@ $langXlfFiles | ForEach-Object {
     $xlfFiles += Copy-Item "$($_.FullName)" -Destination $destinationFile -PassThru
 }
 
-$locFiles = $jsonFiles + $xlfFiles
+$locFiles = $jsonFiles + $jsonWinformsTemplateFiles + $xlfFiles
 
 $locJson = @{
     Projects = @(
diff --git a/eng/common/templates/job/source-index-stage1.yml b/eng/common/templates/job/source-index-stage1.yml
index a649d2b5990c..b58d42364b9e 100644
--- a/eng/common/templates/job/source-index-stage1.yml
+++ b/eng/common/templates/job/source-index-stage1.yml
@@ -1,15 +1,19 @@
 parameters:
   runAsPublic: false
-  sourceIndexPackageVersion: 1.0.1-20210421.1
+  sourceIndexPackageVersion: 1.0.1-20210614.1
   sourceIndexPackageSource: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json
   sourceIndexBuildCommand: powershell -NoLogo -NoProfile -ExecutionPolicy Bypass -Command "eng/common/build.ps1 -restore -build -binarylog -ci"
   preSteps: []
   binlogPath: artifacts/log/Debug/Build.binlog
   pool:
     vmImage: vs2017-win2016
+  condition: ''
+  dependsOn: ''
 
 jobs:
 - job: SourceIndexStage1
+  dependsOn: ${{ parameters.dependsOn }}
+  condition: ${{ parameters.condition }}
   variables:
   - name: SourceIndexPackageVersion
     value: ${{ parameters.sourceIndexPackageVersion }}
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index 5619c7aaee1d..4b2552032493 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -378,7 +378,16 @@ function InitializeVisualStudioMSBuild([bool]$install, [object]$vsRequirements =
   }
 
   $msbuildVersionDir = if ([int]$vsMajorVersion -lt 16) { "$vsMajorVersion.0" } else { "Current" }
-  return $global:_MSBuildExe = Join-Path $vsInstallDir "MSBuild\$msbuildVersionDir\Bin\msbuild.exe"
+
+  $local:BinFolder = Join-Path $vsInstallDir "MSBuild\$msbuildVersionDir\Bin"
+  $local:Prefer64bit = if (Get-Member -InputObject $vsRequirements -Name 'Prefer64bit') { $vsRequirements.Prefer64bit } else { $false }
+  if ($local:Prefer64bit -and (Test-Path(Join-Path $local:BinFolder "amd64"))) {
+    $global:_MSBuildExe = Join-Path $local:BinFolder "amd64\msbuild.exe"
+  } else {
+    $global:_MSBuildExe = Join-Path $local:BinFolder "msbuild.exe"
+  }
+
+  return $global:_MSBuildExe
 }
 
 function InitializeVisualStudioEnvironmentVariables([string] $vsInstallDir, [string] $vsMajorVersion) {
diff --git a/global.json b/global.json
index a5faeabee21c..1bf8cccffaf2 100644
--- a/global.json
+++ b/global.json
@@ -30,7 +30,7 @@
   },
   "msbuild-sdks": {
     "Yarn.MSBuild": "1.22.10",
-    "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.21311.3",
-    "Microsoft.DotNet.Helix.Sdk": "6.0.0-beta.21311.3"
+    "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.21355.2",
+    "Microsoft.DotNet.Helix.Sdk": "6.0.0-beta.21355.2"
   }
 }
diff --git a/src/Servers/HttpSys/test/FunctionalTests/Http2Tests.cs b/src/Servers/HttpSys/test/FunctionalTests/Http2Tests.cs
index 551cdc149134..f8e5e93cd3df 100644
--- a/src/Servers/HttpSys/test/FunctionalTests/Http2Tests.cs
+++ b/src/Servers/HttpSys/test/FunctionalTests/Http2Tests.cs
@@ -624,6 +624,7 @@ public async Task Reset_Http1_NotSupported()
             Assert.Equal("Hello World", response);
         }
 
+        [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/34003")]
         [ConditionalFact]
         [MinimumOSVersion(OperatingSystems.Windows, WindowsVersions.Win10, SkipReason = "Http2 requires Win10")]
         [MaximumOSVersion(OperatingSystems.Windows, WindowsVersions.Win10_20H2, SkipReason = "This is last version without Reset support")]