diff --git a/NuGet.config b/NuGet.config
index 627e2878975..605f970fb35 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -3,7 +3,13 @@
 <configuration>
   <packageSources>
     <clear />
+    <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
+    <!--  Begin: Package sources from dotnet-dotnet -->
+    <add key="darc-pub-dotnet-dotnet-93970af" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-dotnet-93970af2/nuget/v3/index.json" />
+    <!--  End: Package sources from dotnet-dotnet -->
+    <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
+    <add key="dotnet-libraries-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-libraries-transport/nuget/v3/index.json" />
     <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
     <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
     <add key="dotnet7" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet7/nuget/v3/index.json" />
@@ -15,9 +21,5 @@
     <add key="dotnet10" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet10/nuget/v3/index.json" />
     <add key="dotnet10-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet10-transport/nuget/v3/index.json" />
   </packageSources>
-  <auditSources>
-    <clear />
-    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
-  </auditSources>
   <disabledPackageSources />
 </configuration>
diff --git a/build.sh b/build.sh
index 8477d5af881..84a7478bfa5 100755
--- a/build.sh
+++ b/build.sh
@@ -13,4 +13,4 @@ while [[ -h $source ]]; do
 done
 
 scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
-"$scriptroot/eng/common/build.sh" --build --restore $@
+"$scriptroot/eng/common/build.sh" --restore --build $@
diff --git a/eng/Build.props b/eng/Build.props
new file mode 100644
index 00000000000..25dd1f9d38b
--- /dev/null
+++ b/eng/Build.props
@@ -0,0 +1,9 @@
+<Project>
+
+  <!-- Only build the Microsoft.NET.Sdk.WindowsDesktop package on non-Windows. -->
+  <ItemGroup Condition="'$(OS)' != 'Windows_NT'">
+    <ProjectToBuild Include="$(RepoRoot)packaging/Microsoft.NET.Sdk.WindowsDesktop/Microsoft.NET.Sdk.WindowsDesktop.ArchNeutral.csproj" />
+    <ProjectToBuild Include="$(RepoRoot)packaging/Microsoft.Dotnet.Wpf.ProjectTemplates/Microsoft.DotNet.Wpf.ProjectTemplates.ArchNeutral.csproj" />
+  </ItemGroup>
+
+</Project>
\ No newline at end of file
diff --git a/eng/Tools.props b/eng/Tools.props
index 6d65666f935..e8cd72a378c 100644
--- a/eng/Tools.props
+++ b/eng/Tools.props
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <!-- Pre-download vcxproj dependencies as vcxprojs in this repo don't support NuGet package download. -->
-  <ItemGroup>
+  <ItemGroup Condition="'$(OS)' == 'Windows_NT'">
     <PackageDownload Include="Microsoft.NETCore.App.Ref" Version="[$(MicrosoftNETCoreAppRefVersion)]" Condition="'$(MicrosoftNETCoreAppRefVersion)' != ''" />
     <PackageDownload Include="Microsoft.NETCore.App.Runtime.$(_RuntimeIdentifier)" Version="[$(MicrosoftNETCoreAppRefVersion)]" Condition="'$(MicrosoftNETCoreAppRefVersion)' != ''" />
     <PackageDownload Include="Microsoft.NETCore.App.Host.$(_RuntimeIdentifier)" Version="[$(MicrosoftNETCoreAppRefVersion)]" Condition="'$(MicrosoftNETCoreAppRefVersion)' != ''" />
diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index 2c23d8cc4c5..6a9f43bc572 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="utf-8"?>
 <!--
 This file is auto-generated by the Maestro dependency flow system.
 Do not edit it manually, as it will get overwritten by automation.
@@ -7,36 +6,40 @@ This file should be imported by eng/Versions.props
 <Project>
   <PropertyGroup>
     <!-- dotnet/dotnet dependencies -->
-    <MicrosoftDotNetArcadeSdkPackageVersion>10.0.0-beta.25411.109</MicrosoftDotNetArcadeSdkPackageVersion>
-    <MicrosoftDotNetCodeAnalysisPackageVersion>10.0.0-beta.25411.109</MicrosoftDotNetCodeAnalysisPackageVersion>
-    <MicrosoftDotNetGenAPIPackageVersion>10.0.0-beta.25411.109</MicrosoftDotNetGenAPIPackageVersion>
-    <MicrosoftDotNetHelixSdkPackageVersion>10.0.0-beta.25411.109</MicrosoftDotNetHelixSdkPackageVersion>
-    <MicrosoftDotnetWinFormsProjectTemplatesPackageVersion>10.0.0-rc.1.25411.109</MicrosoftDotnetWinFormsProjectTemplatesPackageVersion>
-    <MicrosoftNETCoreAppRefPackageVersion>10.0.0-rc.1.25411.109</MicrosoftNETCoreAppRefPackageVersion>
-    <MicrosoftNETCorePlatformsPackageVersion>10.0.0-rc.1.25411.109</MicrosoftNETCorePlatformsPackageVersion>
-    <MicrosoftPrivateWinformsPackageVersion>10.0.0-rc.1.25411.109</MicrosoftPrivateWinformsPackageVersion>
+    <MicrosoftBuildFrameworkPackageVersion>15.9.20</MicrosoftBuildFrameworkPackageVersion>
+    <MicrosoftBuildUtilitiesCorePackageVersion>15.9.20</MicrosoftBuildUtilitiesCorePackageVersion>
+    <MicrosoftDotNetArcadeSdkPackageVersion>10.0.0-beta.25563.104</MicrosoftDotNetArcadeSdkPackageVersion>
+    <MicrosoftDotNetCodeAnalysisPackageVersion>10.0.0-beta.25563.104</MicrosoftDotNetCodeAnalysisPackageVersion>
+    <MicrosoftDotNetGenAPIPackageVersion>10.0.0-beta.25563.104</MicrosoftDotNetGenAPIPackageVersion>
+    <MicrosoftDotNetHelixSdkPackageVersion>10.0.0-beta.25563.104</MicrosoftDotNetHelixSdkPackageVersion>
+    <MicrosoftDotnetWinFormsProjectTemplatesPackageVersion>10.0.1-servicing.25563.104</MicrosoftDotnetWinFormsProjectTemplatesPackageVersion>
+    <MicrosoftNETCoreAppRefPackageVersion>10.0.1</MicrosoftNETCoreAppRefPackageVersion>
+    <MicrosoftNETCorePlatformsPackageVersion>10.0.1-servicing.25563.104</MicrosoftNETCorePlatformsPackageVersion>
+    <MicrosoftPrivateWinformsPackageVersion>10.0.1-servicing.25563.104</MicrosoftPrivateWinformsPackageVersion>
     <MicrosoftSourceLinkAzureReposGitPackageVersion>8.0.0-beta.23409.2</MicrosoftSourceLinkAzureReposGitPackageVersion>
     <MicrosoftSourceLinkGitHubPackageVersion>8.0.0-beta.23409.2</MicrosoftSourceLinkGitHubPackageVersion>
-    <SystemCodeDomPackageVersion>10.0.0-rc.1.25411.109</SystemCodeDomPackageVersion>
-    <SystemConfigurationConfigurationManagerPackageVersion>10.0.0-rc.1.25411.109</SystemConfigurationConfigurationManagerPackageVersion>
-    <SystemDiagnosticsEventLogPackageVersion>10.0.0-rc.1.25411.109</SystemDiagnosticsEventLogPackageVersion>
-    <SystemDirectoryServicesPackageVersion>10.0.0-rc.1.25411.109</SystemDirectoryServicesPackageVersion>
-    <SystemDrawingCommonPackageVersion>10.0.0-rc.1.25411.109</SystemDrawingCommonPackageVersion>
-    <SystemFormatsNrbfPackageVersion>10.0.0-rc.1.25411.109</SystemFormatsNrbfPackageVersion>
-    <SystemIOPackagingPackageVersion>10.0.0-rc.1.25411.109</SystemIOPackagingPackageVersion>
-    <SystemPrivateWindowsCoreTestUtilitiesPackageVersion>10.0.0-rc.1.25411.109</SystemPrivateWindowsCoreTestUtilitiesPackageVersion>
-    <SystemReflectionMetadataLoadContextPackageVersion>10.0.0-rc.1.25411.109</SystemReflectionMetadataLoadContextPackageVersion>
-    <SystemResourcesExtensionsPackageVersion>10.0.0-rc.1.25411.109</SystemResourcesExtensionsPackageVersion>
-    <SystemRuntimeSerializationFormattersPackageVersion>10.0.0-rc.1.25411.109</SystemRuntimeSerializationFormattersPackageVersion>
-    <SystemSecurityCryptographyXmlPackageVersion>10.0.0-rc.1.25411.109</SystemSecurityCryptographyXmlPackageVersion>
-    <SystemSecurityPermissionsPackageVersion>10.0.0-rc.1.25411.109</SystemSecurityPermissionsPackageVersion>
-    <SystemWindowsExtensionsPackageVersion>10.0.0-rc.1.25411.109</SystemWindowsExtensionsPackageVersion>
+    <SystemCodeDomPackageVersion>10.0.1</SystemCodeDomPackageVersion>
+    <SystemConfigurationConfigurationManagerPackageVersion>10.0.1</SystemConfigurationConfigurationManagerPackageVersion>
+    <SystemDiagnosticsEventLogPackageVersion>10.0.1</SystemDiagnosticsEventLogPackageVersion>
+    <SystemDirectoryServicesPackageVersion>10.0.1</SystemDirectoryServicesPackageVersion>
+    <SystemDrawingCommonPackageVersion>10.0.1</SystemDrawingCommonPackageVersion>
+    <SystemFormatsNrbfPackageVersion>10.0.1</SystemFormatsNrbfPackageVersion>
+    <SystemIOPackagingPackageVersion>10.0.1</SystemIOPackagingPackageVersion>
+    <SystemPrivateWindowsCoreTestUtilitiesPackageVersion>10.0.1-servicing.25563.104</SystemPrivateWindowsCoreTestUtilitiesPackageVersion>
+    <SystemReflectionMetadataLoadContextPackageVersion>10.0.1</SystemReflectionMetadataLoadContextPackageVersion>
+    <SystemResourcesExtensionsPackageVersion>10.0.1</SystemResourcesExtensionsPackageVersion>
+    <SystemRuntimeSerializationFormattersPackageVersion>10.0.1</SystemRuntimeSerializationFormattersPackageVersion>
+    <SystemSecurityCryptographyXmlPackageVersion>10.0.1</SystemSecurityCryptographyXmlPackageVersion>
+    <SystemSecurityPermissionsPackageVersion>10.0.1</SystemSecurityPermissionsPackageVersion>
+    <SystemWindowsExtensionsPackageVersion>10.0.1</SystemWindowsExtensionsPackageVersion>
     <!-- _git/dotnet-wpf-int dependencies -->
-    <MicrosoftDotNetWpfDncEngPackageVersion>10.0.0-preview.7.25317.2</MicrosoftDotNetWpfDncEngPackageVersion>
+    <MicrosoftDotNetWpfDncEngPackageVersion>10.0.1-servicing.25555.1</MicrosoftDotNetWpfDncEngPackageVersion>
   </PropertyGroup>
   <!--Property group for alternate package version names-->
   <PropertyGroup>
     <!-- dotnet/dotnet dependencies -->
+    <MicrosoftBuildFrameworkVersion>$(MicrosoftBuildFrameworkPackageVersion)</MicrosoftBuildFrameworkVersion>
+    <MicrosoftBuildUtilitiesCoreVersion>$(MicrosoftBuildUtilitiesCorePackageVersion)</MicrosoftBuildUtilitiesCoreVersion>
     <MicrosoftDotNetArcadeSdkVersion>$(MicrosoftDotNetArcadeSdkPackageVersion)</MicrosoftDotNetArcadeSdkVersion>
     <MicrosoftDotNetCodeAnalysisVersion>$(MicrosoftDotNetCodeAnalysisPackageVersion)</MicrosoftDotNetCodeAnalysisVersion>
     <MicrosoftDotNetGenAPIVersion>$(MicrosoftDotNetGenAPIPackageVersion)</MicrosoftDotNetGenAPIVersion>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 93c897a685f..99c5ff35f6d 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,100 +1,108 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
-  <Source Uri="https://github.com/dotnet/dotnet" Mapping="wpf" Sha="520c71b5277fc1f72dbec14da03ca55205d6c8e5" BarId="278961" />
+  <Source Uri="https://github.com/dotnet/dotnet" Mapping="wpf" Sha="93970af2dae989c795efb703be9a25ff95079f25" BarId="290774" />
   <ProductDependencies>
-    <Dependency Name="Microsoft.Private.Winforms" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="Microsoft.Private.Winforms" Version="10.0.1-servicing.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Dotnet.WinForms.ProjectTemplates" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="Microsoft.Dotnet.WinForms.ProjectTemplates" Version="10.0.1-servicing.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Reflection.MetadataLoadContext" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Reflection.MetadataLoadContext" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Windows.Extensions" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Windows.Extensions" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.Platforms" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="Microsoft.NETCore.Platforms" Version="10.0.1-servicing.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="10.0.0-preview.7.25317.2">
+    <Dependency Name="Microsoft.DotNet.Wpf.DncEng" Version="10.0.1-servicing.25555.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-wpf-int</Uri>
-      <Sha>8a6c1d81657ef04c040f598cafacf8f5a33abda2</Sha>
+      <Sha>9202df6550bd39e2af8d530a635d96ce070cd744</Sha>
     </Dependency>
-    <Dependency Name="System.Resources.Extensions" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Resources.Extensions" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Runtime.Serialization.Formatters" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Runtime.Serialization.Formatters" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App.Ref" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="Microsoft.NETCore.App.Ref" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.CodeDom" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.CodeDom" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Configuration.ConfigurationManager" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Configuration.ConfigurationManager" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Diagnostics.EventLog" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Diagnostics.EventLog" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.DirectoryServices" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.DirectoryServices" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Formats.Nrbf" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Formats.Nrbf" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.IO.Packaging" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.IO.Packaging" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Security.Cryptography.Xml" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Security.Cryptography.Xml" Version="10.0.1">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
+    </Dependency>
+    <Dependency Name="System.Security.Permissions" Version="10.0.1">
+      <Uri>https://github.com/dotnet/dotnet</Uri>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
+    </Dependency>
+    <Dependency Name="System.Drawing.Common" Version="10.0.1">
+      <Uri>https://github.com/dotnet/dotnet</Uri>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="System.Security.Permissions" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="Microsoft.Build.Framework" Version="15.9.20">
       <Uri>https://github.com/dotnet/dotnet</Uri>
       <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
     </Dependency>
-    <Dependency Name="System.Drawing.Common" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="Microsoft.Build.Utilities.Core" Version="15.9.20">
       <Uri>https://github.com/dotnet/dotnet</Uri>
       <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="System.Private.Windows.Core.TestUtilities" Version="10.0.0-rc.1.25411.109">
+    <Dependency Name="System.Private.Windows.Core.TestUtilities" Version="10.0.1-servicing.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="10.0.0-beta.25411.109">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="10.0.0-beta.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.CodeAnalysis" Version="10.0.0-beta.25411.109">
+    <Dependency Name="Microsoft.DotNet.CodeAnalysis" Version="10.0.0-beta.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.25411.109">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.GenAPI" Version="10.0.0-beta.25411.109">
+    <Dependency Name="Microsoft.DotNet.GenAPI" Version="10.0.0-beta.25563.104">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>520c71b5277fc1f72dbec14da03ca55205d6c8e5</Sha>
+      <Sha>93970af2dae989c795efb703be9a25ff95079f25</Sha>
     </Dependency>
     <!-- TODO: Unpin sourcelink dependencies: https://github.com/dotnet/wpf/issues/11042 -->
     <Dependency Name="Microsoft.SourceLink.AzureRepos.Git" Version="8.0.0-beta.23409.2" Pinned="true">
diff --git a/eng/Versions.props b/eng/Versions.props
index b4e81997d15..fce8c20b774 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -4,9 +4,9 @@
   <PropertyGroup>
     <MajorVersion>10</MajorVersion>
     <MinorVersion>0</MinorVersion>
-    <PatchVersion>0</PatchVersion>
-    <PreReleaseVersionLabel>rc</PreReleaseVersionLabel>
-    <PreReleaseVersionIteration>1</PreReleaseVersionIteration>
+    <PatchVersion>1</PatchVersion>
+    <PreReleaseVersionLabel>servicing</PreReleaseVersionLabel>
+    <PreReleaseVersionIteration></PreReleaseVersionIteration>
     <VersionPrefix>$(MajorVersion).$(MinorVersion).$(PatchVersion)</VersionPrefix>
     <!--
       Set assembly version to align with major and minor version, as for the patches and revisions should be manually
@@ -31,7 +31,7 @@
   </PropertyGroup>
   <!-- Docs / Intellisense -->
   <PropertyGroup>
-    <MicrosoftPrivateIntellisenseVersion>9.0.0-preview-20241010.1</MicrosoftPrivateIntellisenseVersion>
+    <MicrosoftPrivateIntellisenseVersion>10.0.0-preview-20251006.1</MicrosoftPrivateIntellisenseVersion>
   </PropertyGroup>
   <!-- Packages that come from https://github.com/dotnet/arcade -->
   <PropertyGroup>
@@ -39,8 +39,6 @@
   </PropertyGroup>
   <!-- Other Packages that require manual updating-->
   <PropertyGroup>
-    <MicrosoftBuildFrameworkPackageVersion>15.9.20</MicrosoftBuildFrameworkPackageVersion>
-    <MicrosoftBuildUtilitiesCorePackageVersion>15.9.20</MicrosoftBuildUtilitiesCorePackageVersion>
     <!--
         Also in global.json
         Used in Wpf.Cpp.PrivateTools.props/targets
diff --git a/eng/WpfArcadeSdk/Sdk/Sdk.props b/eng/WpfArcadeSdk/Sdk/Sdk.props
index 44eefc48a09..7a6cf353782 100644
--- a/eng/WpfArcadeSdk/Sdk/Sdk.props
+++ b/eng/WpfArcadeSdk/Sdk/Sdk.props
@@ -15,7 +15,7 @@
   <PropertyGroup>
     <GenXmlStringTable>$(WpfArcadeSdkToolsDir)GenXmlStringTable.pl</GenXmlStringTable>
     <LangVersion Condition="'$(LangVersion)'=='' and ($(PreReleaseVersionLabel.Contains('rc')) or $(PreReleaseVersionLabel.Contains('preview')) or $(PreReleaseVersionLabel.Contains('alpha')))">preview</LangVersion>
-    <LangVersion Condition="'$(LangVersion)'==''">12</LangVersion>
+    <LangVersion Condition="'$(LangVersion)'==''">14</LangVersion>
     <CLSCompliant Condition="'$(CLSCompliant)'==''">true</CLSCompliant>
     <IncludeDllSafeSearchPathAttribute Condition="'$(IncludeDllSafeSearchPathAttribute )'==''">true</IncludeDllSafeSearchPathAttribute>
 
diff --git a/eng/WpfArcadeSdk/tools/ApiCompat.targets b/eng/WpfArcadeSdk/tools/ApiCompat.targets
index 3734ed5d1ff..115d8e212af 100644
--- a/eng/WpfArcadeSdk/tools/ApiCompat.targets
+++ b/eng/WpfArcadeSdk/tools/ApiCompat.targets
@@ -8,6 +8,7 @@
     <RunNetFrameworkApiCompat Condition="'$(Net48CompatNeededProjects)'!='' 
                                           and $(Net48CompatNeededProjects.Contains('$(MSBuildProjectName);'))
                                           and !($(MSBuildProjectName.Contains('_wpftmp')))">true</RunNetFrameworkApiCompat>
+    <RunNetFrameworkApiCompat Condition="'$(OS)' != 'Windows_NT'">false</RunNetFrameworkApiCompat>
   </PropertyGroup>
 
   <!-- Only enable Ref API Compat for the lib projects using hand-crafted reference assemblies,
diff --git a/eng/common/SetupNugetSources.ps1 b/eng/common/SetupNugetSources.ps1
index 5db4ad71ee2..65ed3a8adef 100644
--- a/eng/common/SetupNugetSources.ps1
+++ b/eng/common/SetupNugetSources.ps1
@@ -1,17 +1,18 @@
 # This script adds internal feeds required to build commits that depend on internal package sources. For instance,
-# dotnet6-internal would be added automatically if dotnet6 was found in the nuget.config file. In addition also enables
-# disabled internal Maestro (darc-int*) feeds.
+# dotnet6-internal would be added automatically if dotnet6 was found in the nuget.config file. Similarly,
+# dotnet-eng-internal and dotnet-tools-internal are added if dotnet-eng and dotnet-tools are present.
+# In addition, this script also enables disabled internal Maestro (darc-int*) feeds.
 #
 # Optionally, this script also adds a credential entry for each of the internal feeds if supplied.
 #
 # See example call for this script below.
 #
 #  - task: PowerShell@2
-#    displayName: Setup Private Feeds Credentials
+#    displayName: Setup internal Feeds Credentials
 #    condition: eq(variables['Agent.OS'], 'Windows_NT')
 #    inputs:
-#      filePath: $(Build.SourcesDirectory)/eng/common/SetupNugetSources.ps1
-#      arguments: -ConfigFile $(Build.SourcesDirectory)/NuGet.config -Password $Env:Token
+#      filePath: $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.ps1
+#      arguments: -ConfigFile $(System.DefaultWorkingDirectory)/NuGet.config -Password $Env:Token
 #    env:
 #      Token: $(dn-bot-dnceng-artifact-feeds-rw)
 #
@@ -34,19 +35,28 @@ Set-StrictMode -Version 2.0
 
 . $PSScriptRoot\tools.ps1
 
+# Adds or enables the package source with the given name
+function AddOrEnablePackageSource($sources, $disabledPackageSources, $SourceName, $SourceEndPoint, $creds, $Username, $pwd) {
+    if ($disabledPackageSources -eq $null -or -not (EnableInternalPackageSource -DisabledPackageSources $disabledPackageSources -Creds $creds -PackageSourceName $SourceName)) {
+        AddPackageSource -Sources $sources -SourceName $SourceName -SourceEndPoint $SourceEndPoint -Creds $creds -Username $userName -pwd $Password
+    }
+}
+
 # Add source entry to PackageSources
 function AddPackageSource($sources, $SourceName, $SourceEndPoint, $creds, $Username, $pwd) {
     $packageSource = $sources.SelectSingleNode("add[@key='$SourceName']")
     
     if ($packageSource -eq $null)
     {
+        Write-Host "Adding package source $SourceName"
+
         $packageSource = $doc.CreateElement("add")
         $packageSource.SetAttribute("key", $SourceName)
         $packageSource.SetAttribute("value", $SourceEndPoint)
         $sources.AppendChild($packageSource) | Out-Null
     }
     else {
-        Write-Host "Package source $SourceName already present."
+        Write-Host "Package source $SourceName already present and enabled."
     }
 
     AddCredential -Creds $creds -Source $SourceName -Username $Username -pwd $pwd
@@ -59,6 +69,8 @@ function AddCredential($creds, $source, $username, $pwd) {
         return;
     }
 
+    Write-Host "Inserting credential for feed: " $source
+
     # Looks for credential configuration for the given SourceName. Create it if none is found.
     $sourceElement = $creds.SelectSingleNode($Source)
     if ($sourceElement -eq $null)
@@ -91,24 +103,27 @@ function AddCredential($creds, $source, $username, $pwd) {
     $passwordElement.SetAttribute("value", $pwd)
 }
 
-function InsertMaestroPrivateFeedCredentials($Sources, $Creds, $Username, $pwd) {
-    $maestroPrivateSources = $Sources.SelectNodes("add[contains(@key,'darc-int')]")
-
-    Write-Host "Inserting credentials for $($maestroPrivateSources.Count) Maestro's private feeds."
-    
-    ForEach ($PackageSource in $maestroPrivateSources) {
-        Write-Host "`tInserting credential for Maestro's feed:" $PackageSource.Key
-        AddCredential -Creds $creds -Source $PackageSource.Key -Username $Username -pwd $pwd
+# Enable all darc-int package sources.
+function EnableMaestroInternalPackageSources($DisabledPackageSources, $Creds) {
+    $maestroInternalSources = $DisabledPackageSources.SelectNodes("add[contains(@key,'darc-int')]")
+    ForEach ($DisabledPackageSource in $maestroInternalSources) {
+        EnableInternalPackageSource -DisabledPackageSources $DisabledPackageSources -Creds $Creds -PackageSourceName $DisabledPackageSource.key
     }
 }
 
-function EnablePrivatePackageSources($DisabledPackageSources) {
-    $maestroPrivateSources = $DisabledPackageSources.SelectNodes("add[contains(@key,'darc-int')]")
-    ForEach ($DisabledPackageSource in $maestroPrivateSources) {
-        Write-Host "`tEnsuring private source '$($DisabledPackageSource.key)' is enabled by deleting it from disabledPackageSource"
+# Enables an internal package source by name, if found. Returns true if the package source was found and enabled, false otherwise.
+function EnableInternalPackageSource($DisabledPackageSources, $Creds, $PackageSourceName) {
+    $DisabledPackageSource = $DisabledPackageSources.SelectSingleNode("add[@key='$PackageSourceName']")
+    if ($DisabledPackageSource) {
+        Write-Host "Enabling internal source '$($DisabledPackageSource.key)'."
+        
         # Due to https://github.com/NuGet/Home/issues/10291, we must actually remove the disabled entries
         $DisabledPackageSources.RemoveChild($DisabledPackageSource)
+
+        AddCredential -Creds $creds -Source $DisabledPackageSource.Key -Username $userName -pwd $Password
+        return $true
     }
+    return $false
 }
 
 if (!(Test-Path $ConfigFile -PathType Leaf)) {
@@ -121,15 +136,17 @@ $doc = New-Object System.Xml.XmlDocument
 $filename = (Get-Item $ConfigFile).FullName
 $doc.Load($filename)
 
-# Get reference to <PackageSources> or create one if none exist already
+# Get reference to <PackageSources> - fail if none exist
 $sources = $doc.DocumentElement.SelectSingleNode("packageSources")
 if ($sources -eq $null) {
-    $sources = $doc.CreateElement("packageSources")
-    $doc.DocumentElement.AppendChild($sources) | Out-Null
+    Write-PipelineTelemetryError -Category 'Build' -Message "Eng/common/SetupNugetSources.ps1 returned a non-zero exit code. NuGet config file must contain a packageSources section: $ConfigFile"
+    ExitWithExitCode 1
 }
 
 $creds = $null
+$feedSuffix = "v3/index.json"
 if ($Password) {
+    $feedSuffix = "v2"
     # Looks for a <PackageSourceCredentials> node. Create it if none is found.
     $creds = $doc.DocumentElement.SelectSingleNode("packageSourceCredentials")
     if ($creds -eq $null) {
@@ -138,34 +155,35 @@ if ($Password) {
     }
 }
 
+$userName = "dn-bot"
+
 # Check for disabledPackageSources; we'll enable any darc-int ones we find there
 $disabledSources = $doc.DocumentElement.SelectSingleNode("disabledPackageSources")
 if ($disabledSources -ne $null) {
     Write-Host "Checking for any darc-int disabled package sources in the disabledPackageSources node"
-    EnablePrivatePackageSources -DisabledPackageSources $disabledSources
+    EnableMaestroInternalPackageSources -DisabledPackageSources $disabledSources -Creds $creds
 }
-
-$userName = "dn-bot"
-
-# Insert credential nodes for Maestro's private feeds
-InsertMaestroPrivateFeedCredentials -Sources $sources -Creds $creds -Username $userName -pwd $Password
-
-# 3.1 uses a different feed url format so it's handled differently here
-$dotnet31Source = $sources.SelectSingleNode("add[@key='dotnet3.1']")
-if ($dotnet31Source -ne $null) {
-    AddPackageSource -Sources $sources -SourceName "dotnet3.1-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal/nuget/v2" -Creds $creds -Username $userName -pwd $Password
-    AddPackageSource -Sources $sources -SourceName "dotnet3.1-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-transport/nuget/v2" -Creds $creds -Username $userName -pwd $Password
-}
-
-$dotnetVersions = @('5','6','7','8','9')
+$dotnetVersions = @('5','6','7','8','9','10')
 
 foreach ($dotnetVersion in $dotnetVersions) {
     $feedPrefix = "dotnet" + $dotnetVersion;
     $dotnetSource = $sources.SelectSingleNode("add[@key='$feedPrefix']")
     if ($dotnetSource -ne $null) {
-        AddPackageSource -Sources $sources -SourceName "$feedPrefix-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/$feedPrefix-internal/nuget/v2" -Creds $creds -Username $userName -pwd $Password
-        AddPackageSource -Sources $sources -SourceName "$feedPrefix-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/$feedPrefix-internal-transport/nuget/v2" -Creds $creds -Username $userName -pwd $Password
+        AddOrEnablePackageSource -Sources $sources -DisabledPackageSources $disabledSources -SourceName "$feedPrefix-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/$feedPrefix-internal/nuget/$feedSuffix" -Creds $creds -Username $userName -pwd $Password
+        AddOrEnablePackageSource -Sources $sources -DisabledPackageSources $disabledSources -SourceName "$feedPrefix-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/$feedPrefix-internal-transport/nuget/$feedSuffix" -Creds $creds -Username $userName -pwd $Password
     }
 }
 
+# Check for dotnet-eng and add dotnet-eng-internal if present
+$dotnetEngSource = $sources.SelectSingleNode("add[@key='dotnet-eng']")
+if ($dotnetEngSource -ne $null) {
+    AddOrEnablePackageSource -Sources $sources -DisabledPackageSources $disabledSources -SourceName "dotnet-eng-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-eng-internal/nuget/$feedSuffix" -Creds $creds -Username $userName -pwd $Password
+}
+
+# Check for dotnet-tools and add dotnet-tools-internal if present
+$dotnetToolsSource = $sources.SelectSingleNode("add[@key='dotnet-tools']")
+if ($dotnetToolsSource -ne $null) {
+    AddOrEnablePackageSource -Sources $sources -DisabledPackageSources $disabledSources -SourceName "dotnet-tools-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal/nuget/$feedSuffix" -Creds $creds -Username $userName -pwd $Password
+}
+
 $doc.Save($filename)
diff --git a/eng/common/SetupNugetSources.sh b/eng/common/SetupNugetSources.sh
index 4604b61b032..b2163abbe71 100755
--- a/eng/common/SetupNugetSources.sh
+++ b/eng/common/SetupNugetSources.sh
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 
 # This script adds internal feeds required to build commits that depend on internal package sources. For instance,
-# dotnet6-internal would be added automatically if dotnet6 was found in the nuget.config file. In addition also enables
-# disabled internal Maestro (darc-int*) feeds.
+# dotnet6-internal would be added automatically if dotnet6 was found in the nuget.config file. Similarly,
+# dotnet-eng-internal and dotnet-tools-internal are added if dotnet-eng and dotnet-tools are present.
+# In addition, this script also enables disabled internal Maestro (darc-int*) feeds.
 # 
 # Optionally, this script also adds a credential entry for each of the internal feeds if supplied.
 #
@@ -11,8 +12,8 @@
 #  - task: Bash@3
 #    displayName: Setup Internal Feeds
 #    inputs:
-#      filePath: $(Build.SourcesDirectory)/eng/common/SetupNugetSources.sh
-#      arguments: $(Build.SourcesDirectory)/NuGet.config
+#      filePath: $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.sh
+#      arguments: $(System.DefaultWorkingDirectory)/NuGet.config
 #    condition: ne(variables['Agent.OS'], 'Windows_NT')
 #  - task: NuGetAuthenticate@1
 #
@@ -52,81 +53,139 @@ if [[ `uname -s` == "Darwin" ]]; then
     TB=''
 fi
 
-# Ensure there is a <packageSources>...</packageSources> section.
-grep -i "<packageSources>" $ConfigFile
-if [ "$?" != "0" ]; then
-    echo "Adding <packageSources>...</packageSources> section."
-    ConfigNodeHeader="<configuration>"
-    PackageSourcesTemplate="${TB}<packageSources>${NL}${TB}</packageSources>"
+# Enables an internal package source by name, if found. Returns 0 if found and enabled, 1 if not found.
+EnableInternalPackageSource() {
+    local PackageSourceName="$1"
+    
+    # Check if disabledPackageSources section exists
+    grep -i "<disabledPackageSources>" "$ConfigFile" > /dev/null
+    if [ "$?" != "0" ]; then
+        return 1  # No disabled sources section
+    fi
+    
+    # Check if this source name is disabled
+    grep -i "<add key=\"$PackageSourceName\" value=\"true\"" "$ConfigFile" > /dev/null
+    if [ "$?" == "0" ]; then
+        echo "Enabling internal source '$PackageSourceName'."
+        # Remove the disabled entry (including any surrounding comments or whitespace on the same line)
+        sed -i.bak "/<add key=\"$PackageSourceName\" value=\"true\" \/>/d" "$ConfigFile"
+        
+        # Add the source name to PackageSources for credential handling
+        PackageSources+=("$PackageSourceName")
+        return 0  # Found and enabled
+    fi
+    
+    return 1  # Not found in disabled sources
+}
+
+# Add source entry to PackageSources
+AddPackageSource() {
+    local SourceName="$1"
+    local SourceEndPoint="$2"
+    
+    # Check if source already exists
+    grep -i "<add key=\"$SourceName\"" "$ConfigFile" > /dev/null
+    if [ "$?" == "0" ]; then
+        echo "Package source $SourceName already present and enabled."
+        PackageSources+=("$SourceName")
+        return
+    fi
+    
+    echo "Adding package source $SourceName"
+    PackageSourcesNodeFooter="</packageSources>"
+    PackageSourceTemplate="${TB}<add key=\"$SourceName\" value=\"$SourceEndPoint\" />"
+    
+    sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourceTemplate${NL}$PackageSourcesNodeFooter|" "$ConfigFile"
+    PackageSources+=("$SourceName")
+}
+
+# Adds or enables the package source with the given name
+AddOrEnablePackageSource() {
+    local SourceName="$1"
+    local SourceEndPoint="$2"
+    
+    # Try to enable if disabled, if not found then add new source
+    EnableInternalPackageSource "$SourceName"
+    if [ "$?" != "0" ]; then
+        AddPackageSource "$SourceName" "$SourceEndPoint"
+    fi
+}
 
-    sed -i.bak "s|$ConfigNodeHeader|$ConfigNodeHeader${NL}$PackageSourcesTemplate|" $ConfigFile
-fi
+# Enable all darc-int package sources
+EnableMaestroInternalPackageSources() {
+    # Check if disabledPackageSources section exists
+    grep -i "<disabledPackageSources>" "$ConfigFile" > /dev/null
+    if [ "$?" != "0" ]; then
+        return  # No disabled sources section
+    fi
+    
+    # Find all darc-int disabled sources
+    local DisabledDarcIntSources=()
+    DisabledDarcIntSources+=$(grep -oh '"darc-int-[^"]*" value="true"' "$ConfigFile" | tr -d '"')
+    
+    for DisabledSourceName in ${DisabledDarcIntSources[@]} ; do
+        if [[ $DisabledSourceName == darc-int* ]]; then
+            EnableInternalPackageSource "$DisabledSourceName"
+        fi
+    done
+}
 
-# Ensure there is a <packageSourceCredentials>...</packageSourceCredentials> section. 
-grep -i "<packageSourceCredentials>" $ConfigFile
+# Ensure there is a <packageSources>...</packageSources> section.
+grep -i "<packageSources>" $ConfigFile
 if [ "$?" != "0" ]; then
-    echo "Adding <packageSourceCredentials>...</packageSourceCredentials> section."
-
-    PackageSourcesNodeFooter="</packageSources>"
-    PackageSourceCredentialsTemplate="${TB}<packageSourceCredentials>${NL}${TB}</packageSourceCredentials>"
-
-    sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourcesNodeFooter${NL}$PackageSourceCredentialsTemplate|" $ConfigFile
+    Write-PipelineTelemetryError -Category 'Build' "Error: Eng/common/SetupNugetSources.sh returned a non-zero exit code. NuGet config file must contain a packageSources section: $ConfigFile"
+    ExitWithExitCode 1
 fi
 
 PackageSources=()
 
-# Ensure dotnet3.1-internal and dotnet3.1-internal-transport are in the packageSources if the public dotnet3.1 feeds are present
-grep -i "<add key=\"dotnet3.1\"" $ConfigFile
-if [ "$?" == "0" ]; then
-    grep -i "<add key=\"dotnet3.1-internal\"" $ConfigFile
+# Set feed suffix based on whether credentials are provided
+FeedSuffix="v3/index.json"
+if [ -n "$CredToken" ]; then
+    FeedSuffix="v2"
+    
+    # Ensure there is a <packageSourceCredentials>...</packageSourceCredentials> section.
+    grep -i "<packageSourceCredentials>" $ConfigFile
     if [ "$?" != "0" ]; then
-        echo "Adding dotnet3.1-internal to the packageSources."
-        PackageSourcesNodeFooter="</packageSources>"
-        PackageSourceTemplate="${TB}<add key=\"dotnet3.1-internal\" value=\"https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal/nuget/v2\" />"
+        echo "Adding <packageSourceCredentials>...</packageSourceCredentials> section."
 
-        sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourceTemplate${NL}$PackageSourcesNodeFooter|" $ConfigFile
-    fi
-    PackageSources+=('dotnet3.1-internal')
-
-    grep -i "<add key=\"dotnet3.1-internal-transport\">" $ConfigFile
-    if [ "$?" != "0" ]; then
-        echo "Adding dotnet3.1-internal-transport to the packageSources."
         PackageSourcesNodeFooter="</packageSources>"
-        PackageSourceTemplate="${TB}<add key=\"dotnet3.1-internal-transport\" value=\"https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-transport/nuget/v2\" />"
+        PackageSourceCredentialsTemplate="${TB}<packageSourceCredentials>${NL}${TB}</packageSourceCredentials>"
 
-        sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourceTemplate${NL}$PackageSourcesNodeFooter|" $ConfigFile
+        sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourcesNodeFooter${NL}$PackageSourceCredentialsTemplate|" $ConfigFile
     fi
-    PackageSources+=('dotnet3.1-internal-transport')
 fi
 
-DotNetVersions=('5' '6' '7' '8' '9')
+# Check for disabledPackageSources; we'll enable any darc-int ones we find there
+grep -i "<disabledPackageSources>" $ConfigFile > /dev/null
+if [ "$?" == "0" ]; then
+    echo "Checking for any darc-int disabled package sources in the disabledPackageSources node"
+    EnableMaestroInternalPackageSources
+fi
+
+DotNetVersions=('5' '6' '7' '8' '9' '10')
 
 for DotNetVersion in ${DotNetVersions[@]} ; do
     FeedPrefix="dotnet${DotNetVersion}";
-    grep -i "<add key=\"$FeedPrefix\"" $ConfigFile
+    grep -i "<add key=\"$FeedPrefix\"" $ConfigFile > /dev/null
     if [ "$?" == "0" ]; then
-        grep -i "<add key=\"$FeedPrefix-internal\"" $ConfigFile
-        if [ "$?" != "0" ]; then
-            echo "Adding $FeedPrefix-internal to the packageSources."
-            PackageSourcesNodeFooter="</packageSources>"
-            PackageSourceTemplate="${TB}<add key=\"$FeedPrefix-internal\" value=\"https://pkgs.dev.azure.com/dnceng/internal/_packaging/$FeedPrefix-internal/nuget/v2\" />"
-
-            sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourceTemplate${NL}$PackageSourcesNodeFooter|" $ConfigFile
-        fi
-        PackageSources+=("$FeedPrefix-internal")
-
-        grep -i "<add key=\"$FeedPrefix-internal-transport\">" $ConfigFile
-        if [ "$?" != "0" ]; then
-            echo "Adding $FeedPrefix-internal-transport to the packageSources."
-            PackageSourcesNodeFooter="</packageSources>"
-            PackageSourceTemplate="${TB}<add key=\"$FeedPrefix-internal-transport\" value=\"https://pkgs.dev.azure.com/dnceng/internal/_packaging/$FeedPrefix-internal-transport/nuget/v2\" />"
-
-            sed -i.bak "s|$PackageSourcesNodeFooter|$PackageSourceTemplate${NL}$PackageSourcesNodeFooter|" $ConfigFile
-        fi
-        PackageSources+=("$FeedPrefix-internal-transport")
+        AddOrEnablePackageSource "$FeedPrefix-internal" "https://pkgs.dev.azure.com/dnceng/internal/_packaging/$FeedPrefix-internal/nuget/$FeedSuffix"
+        AddOrEnablePackageSource "$FeedPrefix-internal-transport" "https://pkgs.dev.azure.com/dnceng/internal/_packaging/$FeedPrefix-internal-transport/nuget/$FeedSuffix"
     fi
 done
 
+# Check for dotnet-eng and add dotnet-eng-internal if present
+grep -i "<add key=\"dotnet-eng\"" $ConfigFile > /dev/null
+if [ "$?" == "0" ]; then
+    AddOrEnablePackageSource "dotnet-eng-internal" "https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-eng-internal/nuget/$FeedSuffix"
+fi
+
+# Check for dotnet-tools and add dotnet-tools-internal if present
+grep -i "<add key=\"dotnet-tools\"" $ConfigFile > /dev/null
+if [ "$?" == "0" ]; then
+    AddOrEnablePackageSource "dotnet-tools-internal" "https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal/nuget/$FeedSuffix"
+fi
+
 # I want things split line by line
 PrevIFS=$IFS
 IFS=$'\n'
@@ -139,29 +198,12 @@ if [ "$CredToken" ]; then
         # Check if there is no existing credential for this FeedName
         grep -i "<$FeedName>" $ConfigFile 
         if [ "$?" != "0" ]; then
-            echo "Adding credentials for $FeedName."
+            echo "	Inserting credential for feed: $FeedName"
 
             PackageSourceCredentialsNodeFooter="</packageSourceCredentials>"
-            NewCredential="${TB}${TB}<$FeedName>${NL}<add key=\"Username\" value=\"dn-bot\" />${NL}<add key=\"ClearTextPassword\" value=\"$CredToken\" />${NL}</$FeedName>"
+            NewCredential="${TB}${TB}<$FeedName>${NL}${TB}<add key=\"Username\" value=\"dn-bot\" />${NL}${TB}${TB}<add key=\"ClearTextPassword\" value=\"$CredToken\" />${NL}${TB}${TB}</$FeedName>"
 
             sed -i.bak "s|$PackageSourceCredentialsNodeFooter|$NewCredential${NL}$PackageSourceCredentialsNodeFooter|" $ConfigFile
         fi
     done
 fi
-
-# Re-enable any entries in disabledPackageSources where the feed name contains darc-int
-grep -i "<disabledPackageSources>" $ConfigFile
-if [ "$?" == "0" ]; then
-    DisabledDarcIntSources=()
-    echo "Re-enabling any disabled \"darc-int\" package sources in $ConfigFile"
-    DisabledDarcIntSources+=$(grep -oh '"darc-int-[^"]*" value="true"' $ConfigFile  | tr -d '"')
-    for DisabledSourceName in ${DisabledDarcIntSources[@]} ; do
-        if [[ $DisabledSourceName == darc-int* ]]
-            then
-                OldDisableValue="<add key=\"$DisabledSourceName\" value=\"true\" />"
-                NewDisableValue="<!-- Reenabled for build : $DisabledSourceName -->"
-                sed -i.bak "s|$OldDisableValue|$NewDisableValue|" $ConfigFile
-                echo "Neutralized disablePackageSources entry for '$DisabledSourceName'"
-        fi
-    done
-fi
diff --git a/eng/common/core-templates/job/job.yml b/eng/common/core-templates/job/job.yml
index d9013251542..5ce51840619 100644
--- a/eng/common/core-templates/job/job.yml
+++ b/eng/common/core-templates/job/job.yml
@@ -163,7 +163,7 @@ jobs:
       inputs:
         testResultsFormat: 'xUnit'
         testResultsFiles: '*.xml'
-        searchFolder: '$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)'
+        searchFolder: '$(System.DefaultWorkingDirectory)/artifacts/TestResults/$(_BuildConfig)'
         testRunTitle: ${{ coalesce(parameters.testRunTitle, parameters.name, '$(System.JobName)') }}-xunit
         mergeTestResults: ${{ parameters.mergeTestResults }}
       continueOnError: true
@@ -174,7 +174,7 @@ jobs:
       inputs:
         testResultsFormat: 'VSTest'
         testResultsFiles: '*.trx'
-        searchFolder: '$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)'
+        searchFolder: '$(System.DefaultWorkingDirectory)/artifacts/TestResults/$(_BuildConfig)'
         testRunTitle: ${{ coalesce(parameters.testRunTitle, parameters.name, '$(System.JobName)') }}-trx
         mergeTestResults: ${{ parameters.mergeTestResults }}
       continueOnError: true
@@ -218,7 +218,7 @@ jobs:
     - task: CopyFiles@2
       displayName: Gather buildconfiguration for build retry
       inputs:
-        SourceFolder: '$(Build.SourcesDirectory)/eng/common/BuildConfiguration'
+        SourceFolder: '$(System.DefaultWorkingDirectory)/eng/common/BuildConfiguration'
         Contents: '**'
         TargetFolder: '$(Build.ArtifactStagingDirectory)/eng/common/BuildConfiguration'
       continueOnError: true
diff --git a/eng/common/core-templates/job/onelocbuild.yml b/eng/common/core-templates/job/onelocbuild.yml
index 8bf7d23355b..c5788829a87 100644
--- a/eng/common/core-templates/job/onelocbuild.yml
+++ b/eng/common/core-templates/job/onelocbuild.yml
@@ -8,7 +8,7 @@ parameters:
   CeapexPat: $(dn-bot-ceapex-package-r) # PAT for the loc AzDO instance https://dev.azure.com/ceapex
   GithubPat: $(BotAccount-dotnet-bot-repo-PAT)
 
-  SourcesDirectory: $(Build.SourcesDirectory)
+  SourcesDirectory: $(System.DefaultWorkingDirectory)
   CreatePr: true
   AutoCompletePr: false
   ReusePr: true
@@ -68,7 +68,7 @@ jobs:
     - ${{ if ne(parameters.SkipLocProjectJsonGeneration, 'true') }}:
       - task: Powershell@2
         inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/generate-locproject.ps1
+          filePath: $(System.DefaultWorkingDirectory)/eng/common/generate-locproject.ps1
           arguments: $(_GenerateLocProjectArguments)
         displayName: Generate LocProject.json
         condition: ${{ parameters.condition }}
@@ -103,7 +103,7 @@ jobs:
     - task: CopyFiles@2
       displayName: Copy LocProject.json
       inputs:
-        SourceFolder: '$(Build.SourcesDirectory)/eng/Localize/'
+        SourceFolder: '$(System.DefaultWorkingDirectory)/eng/Localize/'
         Contents: 'LocProject.json'
         TargetFolder: '$(Build.ArtifactStagingDirectory)/loc'
       condition: ${{ parameters.condition }}
diff --git a/eng/common/core-templates/job/publish-build-assets.yml b/eng/common/core-templates/job/publish-build-assets.yml
index d5303229c97..e7daa6d2faf 100644
--- a/eng/common/core-templates/job/publish-build-assets.yml
+++ b/eng/common/core-templates/job/publish-build-assets.yml
@@ -38,6 +38,10 @@ parameters:
   # Optional: A minimatch pattern for the asset manifests to publish to BAR
   assetManifestsPattern: '*/manifests/**/*.xml'
 
+  repositoryAlias: self
+
+  officialBuildId: ''
+
 jobs:
 - job: Asset_Registry_Publish
 
@@ -60,6 +64,11 @@ jobs:
       value: false
     # unconditional - needed for logs publishing (redactor tool version)
     - template: /eng/common/core-templates/post-build/common-variables.yml
+  - name: OfficialBuildId
+    ${{ if ne(parameters.officialBuildId, '') }}:
+      value: ${{ parameters.officialBuildId }}
+    ${{ else }}:
+      value: $(Build.BuildNumber)
 
   pool:
     # We don't use the collection uri here because it might vary (.visualstudio.com vs. dev.azure.com)
@@ -78,7 +87,7 @@ jobs:
     - 'Illegal entry point, is1ESPipeline is not defined. Repository yaml should not directly reference templates in core-templates folder.': error
 
   - ${{ if and(eq(parameters.runAsPublic, 'false'), ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
-    - checkout: self
+    - checkout: ${{ parameters.repositoryAlias }}
       fetchDepth: 3
       clean: true
 
@@ -117,12 +126,12 @@ jobs:
         azureSubscription: "Darc: Maestro Production"
         scriptType: ps
         scriptLocation: scriptPath
-        scriptPath: $(Build.SourcesDirectory)/eng/common/sdk-task.ps1
+        scriptPath: $(System.DefaultWorkingDirectory)/eng/common/sdk-task.ps1
         arguments: -task PublishBuildAssets -restore -msbuildEngine dotnet
           /p:ManifestsPath='$(Build.StagingDirectory)/AssetManifests'
           /p:IsAssetlessBuild=${{ parameters.isAssetlessBuild }}
           /p:MaestroApiEndpoint=https://maestro.dot.net
-          /p:OfficialBuildId=$(Build.BuildNumber)
+          /p:OfficialBuildId=$(OfficialBuildId)
       condition: ${{ parameters.condition }}
       continueOnError: ${{ parameters.continueOnError }}
     
@@ -137,7 +146,7 @@ jobs:
           Add-Content -Path $filePath -Value "$(DefaultChannels)"
           Add-Content -Path $filePath -Value $(IsStableBuild)
 
-          $symbolExclusionfile = "$(Build.SourcesDirectory)/eng/SymbolPublishingExclusionsFile.txt"
+          $symbolExclusionfile = "$(System.DefaultWorkingDirectory)/eng/SymbolPublishingExclusionsFile.txt"
           if (Test-Path -Path $symbolExclusionfile)
           {
             Write-Host "SymbolExclusionFile exists"
@@ -171,13 +180,18 @@ jobs:
           PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
           is1ESPipeline: ${{ parameters.is1ESPipeline }}
 
+      # Darc is targeting 8.0, so make sure it's installed
+      - task: UseDotNet@2
+        inputs:
+          version: 8.0.x
+
       - task: AzureCLI@2
         displayName: Publish Using Darc
         inputs:
           azureSubscription: "Darc: Maestro Production"
           scriptType: ps
           scriptLocation: scriptPath
-          scriptPath: $(Build.SourcesDirectory)/eng/common/post-build/publish-using-darc.ps1
+          scriptPath: $(System.DefaultWorkingDirectory)/eng/common/post-build/publish-using-darc.ps1
           arguments: >
             -BuildId $(BARBuildId)
             -PublishingInfraVersion 3
diff --git a/eng/common/core-templates/jobs/codeql-build.yml b/eng/common/core-templates/jobs/codeql-build.yml
index 693b00b3704..dbc14ac580a 100644
--- a/eng/common/core-templates/jobs/codeql-build.yml
+++ b/eng/common/core-templates/jobs/codeql-build.yml
@@ -24,7 +24,7 @@ jobs:
       - name: DefaultGuardianVersion
         value: 0.109.0
       - name: GuardianPackagesConfigFile
-        value: $(Build.SourcesDirectory)\eng\common\sdl\packages.config
+        value: $(System.DefaultWorkingDirectory)\eng\common\sdl\packages.config
       - name: GuardianVersion
         value: ${{ coalesce(parameters.overrideGuardianVersion, '$(DefaultGuardianVersion)') }}
   
diff --git a/eng/common/core-templates/jobs/jobs.yml b/eng/common/core-templates/jobs/jobs.yml
index 2f992b2c6ec..01ada747665 100644
--- a/eng/common/core-templates/jobs/jobs.yml
+++ b/eng/common/core-templates/jobs/jobs.yml
@@ -43,6 +43,8 @@ parameters:
 
   artifacts: {}
   is1ESPipeline: ''
+  repositoryAlias: self
+  officialBuildId: ''
 
 # Internal resources (telemetry, microbuild) can only be accessed from non-public projects,
 # and some (Microbuild) should only be applied to non-PR cases for internal builds.
@@ -114,3 +116,5 @@ jobs:
         enablePublishBuildArtifacts: ${{ parameters.enablePublishBuildArtifacts }}
         artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
         signingValidationAdditionalParameters: ${{ parameters.signingValidationAdditionalParameters }}
+        repositoryAlias: ${{ parameters.repositoryAlias }}
+        officialBuildId: ${{ parameters.officialBuildId }}
diff --git a/eng/common/core-templates/post-build/post-build.yml b/eng/common/core-templates/post-build/post-build.yml
index a151fd811e3..55361908c2e 100644
--- a/eng/common/core-templates/post-build/post-build.yml
+++ b/eng/common/core-templates/post-build/post-build.yml
@@ -154,7 +154,7 @@ stages:
         - task: PowerShell@2
           displayName: Validate
           inputs:
-            filePath: $(Build.SourcesDirectory)/eng/common/post-build/nuget-validation.ps1
+            filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/nuget-validation.ps1
             arguments: -PackagesPath $(Build.ArtifactStagingDirectory)/PackageArtifacts/
 
     - job:
@@ -208,7 +208,7 @@ stages:
             filePath: eng\common\sdk-task.ps1
             arguments: -task SigningValidation -restore -msbuildEngine vs
               /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts'
-              /p:SignCheckExclusionsFile='$(Build.SourcesDirectory)/eng/SignCheckExclusionsFile.txt'
+              /p:SignCheckExclusionsFile='$(System.DefaultWorkingDirectory)/eng/SignCheckExclusionsFile.txt'
               ${{ parameters.signingValidationAdditionalParameters }}
 
         - template: /eng/common/core-templates/steps/publish-logs.yml
@@ -258,7 +258,7 @@ stages:
         - task: PowerShell@2
           displayName: Validate
           inputs:
-            filePath: $(Build.SourcesDirectory)/eng/common/post-build/sourcelink-validation.ps1
+            filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/sourcelink-validation.ps1
             arguments: -InputPath $(Build.ArtifactStagingDirectory)/BlobArtifacts/ 
               -ExtractPath $(Agent.BuildDirectory)/Extract/ 
               -GHRepoName $(Build.Repository.Name) 
@@ -307,13 +307,18 @@ stages:
 
         - task: NuGetAuthenticate@1
 
+        # Darc is targeting 8.0, so make sure it's installed
+        - task: UseDotNet@2
+          inputs:
+            version: 8.0.x
+
         - task: AzureCLI@2
           displayName: Publish Using Darc
           inputs:
             azureSubscription: "Darc: Maestro Production"
             scriptType: ps
             scriptLocation: scriptPath
-            scriptPath: $(Build.SourcesDirectory)/eng/common/post-build/publish-using-darc.ps1
+            scriptPath: $(System.DefaultWorkingDirectory)/eng/common/post-build/publish-using-darc.ps1
             arguments: >
               -BuildId $(BARBuildId)
               -PublishingInfraVersion ${{ parameters.publishingInfraVersion }}
diff --git a/eng/common/core-templates/post-build/setup-maestro-vars.yml b/eng/common/core-templates/post-build/setup-maestro-vars.yml
index f7602980dbe..a7abd58c4bb 100644
--- a/eng/common/core-templates/post-build/setup-maestro-vars.yml
+++ b/eng/common/core-templates/post-build/setup-maestro-vars.yml
@@ -36,7 +36,7 @@ steps:
             $AzureDevOpsBuildId = $Env:Build_BuildId
           }
           else {
-            . $(Build.SourcesDirectory)\eng\common\tools.ps1
+            . $(System.DefaultWorkingDirectory)\eng\common\tools.ps1
             $darc = Get-Darc
             $buildInfo = & $darc get-build `
               --id ${{ parameters.BARBuildId }} `
diff --git a/eng/common/core-templates/steps/enable-internal-sources.yml b/eng/common/core-templates/steps/enable-internal-sources.yml
index 64f881bffc3..4085512b690 100644
--- a/eng/common/core-templates/steps/enable-internal-sources.yml
+++ b/eng/common/core-templates/steps/enable-internal-sources.yml
@@ -17,8 +17,8 @@ steps:
     - task: PowerShell@2
       displayName: Setup Internal Feeds
       inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/SetupNugetSources.ps1
-        arguments: -ConfigFile $(Build.SourcesDirectory)/NuGet.config -Password $Env:Token
+        filePath: $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.ps1
+        arguments: -ConfigFile $(System.DefaultWorkingDirectory)/NuGet.config -Password $Env:Token
       env:
         Token: ${{ parameters.legacyCredential }}
   # If running on dnceng (internal project), just use the default behavior for NuGetAuthenticate.
@@ -29,8 +29,8 @@ steps:
       - task: PowerShell@2
         displayName: Setup Internal Feeds
         inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/SetupNugetSources.ps1
-          arguments: -ConfigFile $(Build.SourcesDirectory)/NuGet.config
+          filePath: $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.ps1
+          arguments: -ConfigFile $(System.DefaultWorkingDirectory)/NuGet.config
     - ${{ else }}:
       - template: /eng/common/templates/steps/get-federated-access-token.yml
         parameters:
@@ -39,8 +39,8 @@ steps:
       - task: PowerShell@2
         displayName: Setup Internal Feeds
         inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/SetupNugetSources.ps1
-          arguments: -ConfigFile $(Build.SourcesDirectory)/NuGet.config -Password $(dnceng-artifacts-feeds-read-access-token)
+          filePath: $(System.DefaultWorkingDirectory)/eng/common/SetupNugetSources.ps1
+          arguments: -ConfigFile $(System.DefaultWorkingDirectory)/NuGet.config -Password $(dnceng-artifacts-feeds-read-access-token)
   # This is required in certain scenarios to install the ADO credential provider.
   # It installed by default in some msbuild invocations (e.g. VS msbuild), but needs to be installed for others
   # (e.g. dotnet msbuild).
diff --git a/eng/common/core-templates/steps/generate-sbom.yml b/eng/common/core-templates/steps/generate-sbom.yml
index 44a9636cdff..c05f6502797 100644
--- a/eng/common/core-templates/steps/generate-sbom.yml
+++ b/eng/common/core-templates/steps/generate-sbom.yml
@@ -6,7 +6,7 @@
 
 parameters:
   PackageVersion: 10.0.0
-  BuildDropPath: '$(Build.SourcesDirectory)/artifacts'
+  BuildDropPath: '$(System.DefaultWorkingDirectory)/artifacts'
   PackageName: '.NET'
   ManifestDirPath: $(Build.ArtifactStagingDirectory)/sbom
   IgnoreDirectories: ''
diff --git a/eng/common/core-templates/steps/install-microbuild.yml b/eng/common/core-templates/steps/install-microbuild.yml
index da30e67bc34..f2248ebfd73 100644
--- a/eng/common/core-templates/steps/install-microbuild.yml
+++ b/eng/common/core-templates/steps/install-microbuild.yml
@@ -11,22 +11,22 @@ parameters:
   # Unfortunately, _SignType can't be used to exclude the use of the service connection in non-real sign scenarios. The
   # variable is not available in template expression. _SignType has a very large proliferation across .NET, so replacing it is tough.
   microbuildUseESRP: true
-  # Location of the MicroBuild output folder
-  microBuildOutputFolder: '$(Build.SourcesDirectory)'
 
   continueOnError: false
 
 steps:
   - ${{ if eq(parameters.enableMicrobuild, 'true') }}:
     - ${{ if eq(parameters.enableMicrobuildForMacAndLinux, 'true') }}:
-      # Needed to download the MicroBuild plugin nupkgs on Mac and Linux when nuget.exe is unavailable
+      # Installing .NET 8 is required to use the MicroBuild signing plugin on non-Windows platforms
       - task: UseDotNet@2
         displayName: Install .NET 8.0 SDK for MicroBuild Plugin
         inputs:
           packageType: sdk
           version: 8.0.x
-          installationPath: ${{ parameters.microBuildOutputFolder }}/.dotnet
-          workingDirectory: ${{ parameters.microBuildOutputFolder }}
+          # Installing the SDK in a '.dotnet-microbuild' directory is required for signing.
+          # See target FindDotNetPathForMicroBuild in arcade/src/Microsoft.DotNet.Arcade.Sdk/tools/Sign.proj
+          # Do not remove '.dotnet-microbuild' from the path without changing the corresponding logic.
+          installationPath: $(Agent.TempDirectory)/.dotnet-microbuild
         condition: and(succeeded(), ne(variables['Agent.Os'], 'Windows_NT'))
 
     - script: |
@@ -46,35 +46,45 @@ steps:
       displayName: 'Validate ESRP usage (Non-Windows)'
       condition: and(succeeded(), ne(variables['Agent.Os'], 'Windows_NT'))
 
+    # Two different MB install steps. This is due to not being able to use the agent OS during
+    # YAML expansion, and Windows vs. Linux/Mac uses different service connections. However,
+    # we can avoid including the MB install step if not enabled at all. This avoids a bunch of
+    # extra pipeline authorizations, since most pipelines do not sign on non-Windows.
     - task: MicroBuildSigningPlugin@4
-      displayName: Install MicroBuild plugin
+      displayName: Install MicroBuild plugin (Windows)
       inputs:
         signType: $(_SignType)
         zipSources: false
         feedSource: https://dnceng.pkgs.visualstudio.com/_packaging/MicroBuildToolset/nuget/v3/index.json
         ${{ if eq(parameters.microbuildUseESRP, true) }}:
-          ${{ if eq(parameters.enableMicrobuildForMacAndLinux, 'true') }}:
-            azureSubscription: 'MicroBuild Signing Task (DevDiv)'
-            useEsrpCli: true
-          ${{ elseif eq(variables['System.TeamProject'], 'DevDiv') }}:
+          ConnectedServiceName: 'MicroBuild Signing Task (DevDiv)'
+          ${{ if eq(variables['System.TeamProject'], 'DevDiv') }}:
             ConnectedPMEServiceName: 6cc74545-d7b9-4050-9dfa-ebefcc8961ea
           ${{ else }}:
             ConnectedPMEServiceName: 248d384a-b39b-46e3-8ad5-c2c210d5e7ca
       env:
         TeamName: $(_TeamName)
-        MicroBuildOutputFolderOverride: ${{ parameters.microBuildOutputFolder }}
+        MicroBuildOutputFolderOverride: $(Agent.TempDirectory)/MicroBuild
         SYSTEM_ACCESSTOKEN: $(System.AccessToken)
       continueOnError: ${{ parameters.continueOnError }}
-      condition: and(
-        succeeded(),
-        or(
-          and(
-            eq(variables['Agent.Os'], 'Windows_NT'),
-            in(variables['_SignType'], 'real', 'test')
-          ),
-          and(
-            ${{ eq(parameters.enableMicrobuildForMacAndLinux, true) }},
-            ne(variables['Agent.Os'], 'Windows_NT'),
-            eq(variables['_SignType'], 'real')
-          )
-        ))
+      condition: and(succeeded(), eq(variables['Agent.Os'], 'Windows_NT'), in(variables['_SignType'], 'real', 'test'))
+
+    - ${{ if eq(parameters.enableMicrobuildForMacAndLinux, true) }}:
+      - task: MicroBuildSigningPlugin@4
+        displayName: Install MicroBuild plugin (non-Windows)
+        inputs:
+          signType: $(_SignType)
+          zipSources: false
+          feedSource: https://dnceng.pkgs.visualstudio.com/_packaging/MicroBuildToolset/nuget/v3/index.json
+          ${{ if eq(parameters.microbuildUseESRP, true) }}:
+            ConnectedServiceName: 'MicroBuild Signing Task (DevDiv)'
+            ${{ if eq(variables['System.TeamProject'], 'DevDiv') }}:
+              ConnectedPMEServiceName: beb8cb23-b303-4c95-ab26-9e44bc958d39
+            ${{ else }}:
+              ConnectedPMEServiceName: c24de2a5-cc7a-493d-95e4-8e5ff5cad2bc
+        env:
+          TeamName: $(_TeamName)
+          MicroBuildOutputFolderOverride: $(Agent.TempDirectory)/MicroBuild
+          SYSTEM_ACCESSTOKEN: $(System.AccessToken)
+        continueOnError: ${{ parameters.continueOnError }}
+        condition: and(succeeded(), ne(variables['Agent.Os'], 'Windows_NT'),  eq(variables['_SignType'], 'real'))
diff --git a/eng/common/core-templates/steps/publish-logs.yml b/eng/common/core-templates/steps/publish-logs.yml
index de24d0087c5..10f825e270a 100644
--- a/eng/common/core-templates/steps/publish-logs.yml
+++ b/eng/common/core-templates/steps/publish-logs.yml
@@ -12,22 +12,22 @@ steps:
   inputs:
     targetType: inline
     script: |
-      New-Item -ItemType Directory $(Build.SourcesDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
-      Move-Item -Path $(Build.SourcesDirectory)/artifacts/log/Debug/* $(Build.SourcesDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
+      New-Item -ItemType Directory $(System.DefaultWorkingDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
+      Move-Item -Path $(System.DefaultWorkingDirectory)/artifacts/log/Debug/* $(System.DefaultWorkingDirectory)/PostBuildLogs/${{parameters.StageLabel}}/${{parameters.JobLabel}}/
   continueOnError: true
   condition: always()
     
 - task: PowerShell@2
   displayName: Redact Logs
   inputs:
-    filePath: $(Build.SourcesDirectory)/eng/common/post-build/redact-logs.ps1
+    filePath: $(System.DefaultWorkingDirectory)/eng/common/post-build/redact-logs.ps1
     # For now this needs to have explicit list of all sensitive data. Taken from eng/publishing/v3/publish.yml
-    # Sensitive data can as well be added to $(Build.SourcesDirectory)/eng/BinlogSecretsRedactionFile.txt'
+    # Sensitive data can as well be added to $(System.DefaultWorkingDirectory)/eng/BinlogSecretsRedactionFile.txt'
     #  If the file exists - sensitive data for redaction will be sourced from it
     #  (single entry per line, lines starting with '# ' are considered comments and skipped)
-    arguments: -InputPath '$(Build.SourcesDirectory)/PostBuildLogs' 
+    arguments: -InputPath '$(System.DefaultWorkingDirectory)/PostBuildLogs' 
       -BinlogToolVersion ${{parameters.BinlogToolVersion}}
-      -TokensFilePath '$(Build.SourcesDirectory)/eng/BinlogSecretsRedactionFile.txt'
+      -TokensFilePath '$(System.DefaultWorkingDirectory)/eng/BinlogSecretsRedactionFile.txt'
       '$(publishing-dnceng-devdiv-code-r-build-re)'
       '$(MaestroAccessToken)'
       '$(dn-bot-all-orgs-artifact-feeds-rw)'
@@ -44,7 +44,7 @@ steps:
 - task: CopyFiles@2
   displayName: Gather post build logs
   inputs:
-    SourceFolder: '$(Build.SourcesDirectory)/PostBuildLogs'
+    SourceFolder: '$(System.DefaultWorkingDirectory)/PostBuildLogs'
     Contents: '**'
     TargetFolder: '$(Build.ArtifactStagingDirectory)/PostBuildLogs'
   condition: always()
diff --git a/eng/common/core-templates/steps/source-index-stage1-publish.yml b/eng/common/core-templates/steps/source-index-stage1-publish.yml
index c2917c1efc1..e9a694afa58 100644
--- a/eng/common/core-templates/steps/source-index-stage1-publish.yml
+++ b/eng/common/core-templates/steps/source-index-stage1-publish.yml
@@ -1,6 +1,6 @@
 parameters:
-  sourceIndexUploadPackageVersion: 2.0.0-20250425.2
-  sourceIndexProcessBinlogPackageVersion: 1.0.1-20250515.1
+  sourceIndexUploadPackageVersion: 2.0.0-20250818.1
+  sourceIndexProcessBinlogPackageVersion: 1.0.1-20250818.1
   sourceIndexPackageSource: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json
   binlogPath: artifacts/log/Debug/Build.binlog
 
@@ -20,7 +20,7 @@ steps:
   # Set working directory to temp directory so 'dotnet' doesn't try to use global.json and use the repo's sdk.
   workingDirectory: $(Agent.TempDirectory)
 
-- script: $(Agent.TempDirectory)/.source-index/tools/BinLogToSln -i ${{parameters.BinlogPath}} -r $(Build.SourcesDirectory) -n $(Build.Repository.Name) -o .source-index/stage1output
+- script: $(Agent.TempDirectory)/.source-index/tools/BinLogToSln -i ${{parameters.BinlogPath}} -r $(System.DefaultWorkingDirectory) -n $(Build.Repository.Name) -o .source-index/stage1output
   displayName: "Source Index: Process Binlog into indexable sln"
 
 - ${{ if and(ne(parameters.runAsPublic, 'true'), ne(variables['System.TeamProject'], 'public'), notin(variables['Build.Reason'], 'PullRequest')) }}:
diff --git a/eng/common/generate-locproject.ps1 b/eng/common/generate-locproject.ps1
index 524aaa57f2b..fa1cdc2b300 100644
--- a/eng/common/generate-locproject.ps1
+++ b/eng/common/generate-locproject.ps1
@@ -33,15 +33,27 @@ $jsonTemplateFiles | ForEach-Object {
 
 $jsonWinformsTemplateFiles = Get-ChildItem -Recurse -Path "$SourcesDirectory" | Where-Object { $_.FullName -Match "en\\strings\.json" } # current winforms pattern
 
+$wxlFilesV3 = @()
+$wxlFilesV5 = @()
 $wxlFiles = Get-ChildItem -Recurse -Path "$SourcesDirectory" | Where-Object { $_.FullName -Match "\\.+\.wxl" -And -Not( $_.Directory.Name -Match "\d{4}" ) } # localized files live in four digit lang ID directories; this excludes them
 if (-not $wxlFiles) {
     $wxlEnFiles = Get-ChildItem -Recurse -Path "$SourcesDirectory" | Where-Object { $_.FullName -Match "\\1033\\.+\.wxl" } #  pick up en files (1033 = en) specifically so we can copy them to use as the neutral xlf files
     if ($wxlEnFiles) {
-      $wxlFiles = @()
-      $wxlEnFiles | ForEach-Object {
-        $destinationFile = "$($_.Directory.Parent.FullName)\$($_.Name)"
-        $wxlFiles += Copy-Item "$($_.FullName)" -Destination $destinationFile -PassThru
-      }
+        $wxlFiles = @()
+        $wxlEnFiles | ForEach-Object {
+            $destinationFile = "$($_.Directory.Parent.FullName)\$($_.Name)"
+            $content = Get-Content $_.FullName -Raw
+
+            # Split files on schema to select different parser settings in the generated project.
+            if ($content -like "*http://wixtoolset.org/schemas/v4/wxl*")
+            {
+                $wxlFilesV5 += Copy-Item $_.FullName -Destination $destinationFile -PassThru
+            }
+            elseif ($content -like "*http://schemas.microsoft.com/wix/2006/localization*")
+            {
+                $wxlFilesV3 += Copy-Item $_.FullName -Destination $destinationFile -PassThru
+            }
+        }
     }
 }
 
@@ -114,7 +126,32 @@ $locJson = @{
             CloneLanguageSet = "WiX_CloneLanguages"
             LssFiles = @( "wxl_loc.lss" )
             LocItems = @(
-                $wxlFiles | ForEach-Object {
+                $wxlFilesV3 | ForEach-Object {
+                    $outputPath = "$($_.Directory.FullName | Resolve-Path -Relative)\"
+                    $continue = $true
+                    foreach ($exclusion in $exclusions.Exclusions) {
+                        if ($_.FullName.Contains($exclusion)) {
+                            $continue = $false
+                        }
+                    }
+                    $sourceFile = ($_.FullName | Resolve-Path -Relative)
+                    if ($continue)
+                    {
+                        return @{
+                            SourceFile = $sourceFile
+                            CopyOption = "LangIDOnPath"
+                            OutputPath = $outputPath
+                        }
+                    }
+                }
+            )
+        },
+        @{
+            LanguageSet = $LanguageSet
+            CloneLanguageSet = "WiX_CloneLanguages"
+            LssFiles = @( "P210WxlSchemaV4.lss" )
+            LocItems = @(
+                $wxlFilesV5 | ForEach-Object {
                     $outputPath = "$($_.Directory.FullName | Resolve-Path -Relative)\"
                     $continue = $true
                     foreach ($exclusion in $exclusions.Exclusions) {
diff --git a/eng/common/post-build/nuget-verification.ps1 b/eng/common/post-build/nuget-verification.ps1
index a365194a938..ac5c69ffcac 100644
--- a/eng/common/post-build/nuget-verification.ps1
+++ b/eng/common/post-build/nuget-verification.ps1
@@ -30,7 +30,7 @@
 [CmdletBinding(PositionalBinding = $false)]
 param(
    [string]$NuGetExePath,
-   [string]$PackageSource = "https://api.nuget.org/v3/index.json",
+   [string]$PackageSource = "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json",
    [string]$DownloadPath,
    [Parameter(ValueFromRemainingArguments = $true)]
    [string[]]$args
diff --git a/eng/common/sdk-task.ps1 b/eng/common/sdk-task.ps1
index a9d2a2d2699..b62e132d32a 100644
--- a/eng/common/sdk-task.ps1
+++ b/eng/common/sdk-task.ps1
@@ -7,13 +7,14 @@ Param(
   [switch] $restore,
   [switch] $prepareMachine,
   [switch][Alias('nobl')]$excludeCIBinaryLog,
+  [switch]$noWarnAsError,
   [switch] $help,
   [Parameter(ValueFromRemainingArguments=$true)][String[]]$properties
 )
 
 $ci = $true
 $binaryLog = if ($excludeCIBinaryLog) { $false } else { $true }
-$warnAsError = $true
+$warnAsError = if ($noWarnAsError) { $false } else { $true }
 
 . $PSScriptRoot\tools.ps1
 
diff --git a/eng/common/sdk-task.sh b/eng/common/sdk-task.sh
index 2f83adc0269..3270f83fa9a 100755
--- a/eng/common/sdk-task.sh
+++ b/eng/common/sdk-task.sh
@@ -10,6 +10,7 @@ show_usage() {
 
     echo "Advanced settings:"
     echo "  --excludeCIBinarylog     Don't output binary log (short: -nobl)"
+    echo "  --noWarnAsError          Do not warn as error"
     echo ""
     echo "Command line arguments not listed above are passed thru to msbuild."
 }
@@ -52,6 +53,7 @@ exclude_ci_binary_log=false
 restore=false
 help=false
 properties=''
+warnAsError=true
 
 while (($# > 0)); do
   lowerI="$(echo $1 | tr "[:upper:]" "[:lower:]")"
@@ -73,6 +75,10 @@ while (($# > 0)); do
       exclude_ci_binary_log=true
       shift 1
       ;;
+    --noWarnAsError)
+      warnAsError=false
+      shift 1
+      ;;
     --help)
       help=true
       shift 1
@@ -85,7 +91,6 @@ while (($# > 0)); do
 done
 
 ci=true
-warnAsError=true
 
 if $help; then
   show_usage
diff --git a/eng/common/template-guidance.md b/eng/common/template-guidance.md
index 98bbc1ded0b..4bf4cf41bd7 100644
--- a/eng/common/template-guidance.md
+++ b/eng/common/template-guidance.md
@@ -50,7 +50,7 @@ extends:
           - task: CopyFiles@2
               displayName: Gather build output
               inputs:
-                SourceFolder: '$(Build.SourcesDirectory)/artifacts/marvel'
+                SourceFolder: '$(System.DefaultWorkingDirectory)/artifacts/marvel'
                 Contents: '**'
                 TargetFolder: '$(Build.ArtifactStagingDirectory)/artifacts/marvel'
 ```
diff --git a/eng/common/templates-official/job/job.yml b/eng/common/templates-official/job/job.yml
index a8a94328745..92a0664f564 100644
--- a/eng/common/templates-official/job/job.yml
+++ b/eng/common/templates-official/job/job.yml
@@ -3,7 +3,7 @@ parameters:
   enableSbom: true
   runAsPublic: false
   PackageVersion: 9.0.0
-  BuildDropPath: '$(Build.SourcesDirectory)/artifacts'
+  BuildDropPath: '$(System.DefaultWorkingDirectory)/artifacts'
 
 jobs:
 - template: /eng/common/core-templates/job/job.yml
diff --git a/eng/common/templates-official/variables/sdl-variables.yml b/eng/common/templates-official/variables/sdl-variables.yml
index dbdd66d4a4b..f1311bbb1b3 100644
--- a/eng/common/templates-official/variables/sdl-variables.yml
+++ b/eng/common/templates-official/variables/sdl-variables.yml
@@ -4,4 +4,4 @@ variables:
 - name: DefaultGuardianVersion
   value: 0.109.0
 - name: GuardianPackagesConfigFile
-  value: $(Build.SourcesDirectory)\eng\common\sdl\packages.config
\ No newline at end of file
+  value: $(System.DefaultWorkingDirectory)\eng\common\sdl\packages.config
\ No newline at end of file
diff --git a/eng/common/templates/job/job.yml b/eng/common/templates/job/job.yml
index 7cbf668c22b..238fa0818f7 100644
--- a/eng/common/templates/job/job.yml
+++ b/eng/common/templates/job/job.yml
@@ -6,7 +6,7 @@ parameters:
   enableSbom: true
   runAsPublic: false
   PackageVersion: 9.0.0
-  BuildDropPath: '$(Build.SourcesDirectory)/artifacts'
+  BuildDropPath: '$(System.DefaultWorkingDirectory)/artifacts'
 
 jobs:
 - template: /eng/common/core-templates/job/job.yml
@@ -77,7 +77,7 @@ jobs:
         parameters:
           is1ESPipeline: false
           args:
-            targetPath: '$(Build.SourcesDirectory)\eng\common\BuildConfiguration'
+            targetPath: '$(System.DefaultWorkingDirectory)\eng\common\BuildConfiguration'
             artifactName: 'BuildConfiguration'
             displayName: 'Publish build retry configuration'
             continueOnError: true
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index d4cfd9ccd80..06b44de7870 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -544,7 +544,8 @@ function LocateVisualStudio([object]$vsRequirements = $null){
   if (Get-Member -InputObject $GlobalJson.tools -Name 'vswhere') {
     $vswhereVersion = $GlobalJson.tools.vswhere
   } else {
-    $vswhereVersion = '2.5.2'
+    # keep this in sync with the VSWhereVersion in DefaultVersions.props
+    $vswhereVersion = '3.1.7'
   }
 
   $vsWhereDir = Join-Path $ToolsDir "vswhere\$vswhereVersion"
@@ -552,7 +553,8 @@ function LocateVisualStudio([object]$vsRequirements = $null){
 
   if (!(Test-Path $vsWhereExe)) {
     Create-Directory $vsWhereDir
-    Write-Host 'Downloading vswhere'
+    Write-Host "Downloading vswhere $vswhereVersion"
+    $ProgressPreference = 'SilentlyContinue' # Don't display the console progress UI - it's a huge perf hit
     Retry({
       Invoke-WebRequest "https://netcorenativeassets.blob.core.windows.net/resource-packages/external/windows/vswhere/$vswhereVersion/vswhere.exe" -OutFile $vswhereExe
     })
diff --git a/es-metadata.yml b/es-metadata.yml
new file mode 100644
index 00000000000..3de9e85969e
--- /dev/null
+++ b/es-metadata.yml
@@ -0,0 +1,8 @@
+schemaVersion: 0.0.1
+isProduction: true
+accountableOwners:
+  service: 174e5b50-35f9-4c31-8d9e-0e1cf9efaf85
+routing:
+  defaultAreaPath:
+    org: devdiv
+    path: DevDiv\NET Fundamentals\NET Partners\WPF\Security\SDL
diff --git a/global.json b/global.json
index 9714f9dadd2..9876c211abd 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "10.0.100-preview.7.25372.107",
+    "version": "10.0.100-rc.2.25502.107",
     "allowPrerelease": true,
     "rollForward": "latestFeature",
     "paths": [
@@ -10,7 +10,7 @@
     "errorMessage": "The required .NET SDK wasn't found. Please run ./eng/common/dotnet.cmd/sh to install it."
   },
   "tools": {
-    "dotnet": "10.0.100-preview.7.25372.107",
+    "dotnet": "10.0.100-rc.2.25502.107",
     "runtimes": {
       "dotnet/x64": [
         "$(MicrosoftNETCorePlatformsVersion)"
@@ -24,8 +24,8 @@
     }
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "10.0.0-beta.25411.109",
-    "Microsoft.DotNet.Helix.Sdk": "10.0.0-beta.25411.109",
+    "Microsoft.DotNet.Arcade.Sdk": "10.0.0-beta.25563.104",
+    "Microsoft.DotNet.Helix.Sdk": "10.0.0-beta.25563.104",
     "Microsoft.Build.NoTargets": "3.7.56"
   },
   "native-tools": {
diff --git a/packaging/Microsoft.NET.Sdk.WindowsDesktop/Microsoft.NET.Sdk.WindowsDesktop.ArchNeutral.csproj b/packaging/Microsoft.NET.Sdk.WindowsDesktop/Microsoft.NET.Sdk.WindowsDesktop.ArchNeutral.csproj
index 56a505e364c..debfd3de4a2 100644
--- a/packaging/Microsoft.NET.Sdk.WindowsDesktop/Microsoft.NET.Sdk.WindowsDesktop.ArchNeutral.csproj
+++ b/packaging/Microsoft.NET.Sdk.WindowsDesktop/Microsoft.NET.Sdk.WindowsDesktop.ArchNeutral.csproj
@@ -27,6 +27,10 @@
     <PackagingContent Include="useSharedDesignerContext.txt" SubFolder="root" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="$(RepoRoot)src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/PresentationBuildTasks.csproj" ReferenceOutputAssembly="false" SkipGetTargetFrameworkProperties="true" />
+  </ItemGroup>
+
   <!-- Windows Forms validation and packaging -->
   <Import Project="Microsoft.NET.Sdk.WindowsDesktop.WinForms.Packaging.targets" />
 
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/PresentationBuildTasks.csproj b/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/PresentationBuildTasks.csproj
index 0feda021e68..dd20b37919b 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/PresentationBuildTasks.csproj
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/PresentationBuildTasks.csproj
@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>net472;net10.0</TargetFrameworks>
+    <TargetFramework />
     <EnableDefaultItems>false</EnableDefaultItems>
     <EnablePInvokeAnalyzer>true</EnablePInvokeAnalyzer>
 
@@ -121,11 +122,11 @@
     <Compile Include="$(WpfSourceDir)\WindowsBase\MS\Internal\IO\Packaging\CompoundFile\ContainerUtilities.cs">
       <Link>WindowsBase\MS\Internal\IO\Packaging\CompoundFile\ContainerUtilities.cs</Link>
     </Compile>
-    <Compile Include="$(WpfSourceDir)\PresentationCore\MS\Internal\Media\XamlSerializationHelper.cs">
-      <Link>PresentationCore\MS\Internal\Media\XamlSerializationHelper.cs</Link>
+    <Compile Include="$(WpfSourceDir)\PresentationCore\MS\internal\Media\XamlSerializationHelper.cs">
+      <Link>PresentationCore\MS\internal\Media\XamlSerializationHelper.cs</Link>
     </Compile>
-    <Compile Include="$(WpfSourceDir)\PresentationCore\MS\Internal\Media\ParserStreamGeometryContext.cs">
-      <Link>PresentationCore\MS\Internal\Media\ParserStreamGeometryContext.cs</Link>
+    <Compile Include="$(WpfSourceDir)\PresentationCore\MS\internal\Media\ParserStreamGeometryContext.cs">
+      <Link>PresentationCore\MS\internal\Media\ParserStreamGeometryContext.cs</Link>
     </Compile>
     <Compile Include="$(WpfSourceDir)\PresentationCore\System\Windows\Media\StreamGeometryContext.cs">
       <Link>PresentationCore\System\Windows\Media\StreamGeometryContext.cs</Link>