diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 119445a35..cebedd615 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -3,13 +3,13 @@
   <ProductDependencies>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="10.0.0-beta.26414.3">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="10.0.0-beta.26423.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>caa49f7726ab75f513f2fb814030657cf1afc0e4</Sha>
+      <Sha>02d2876e0eb4f3d1391fbb029aa46e8511669c54</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.26414.3">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.26423.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>caa49f7726ab75f513f2fb814030657cf1afc0e4</Sha>
+      <Sha>02d2876e0eb4f3d1391fbb029aa46e8511669c54</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/common/core-templates/job/onelocbuild.yml b/eng/common/core-templates/job/onelocbuild.yml
index b28af6613..726c2c1da 100644
--- a/eng/common/core-templates/job/onelocbuild.yml
+++ b/eng/common/core-templates/job/onelocbuild.yml
@@ -14,10 +14,11 @@ parameters:
   # exist, and any pipeline that sets this to '' fall back to PAT-based auth via the CeapexPat parameter.
   CeapexServiceConnection: 'dnceng-onelocbuild-ceapex'
 
-  # GitHub App authentication for the OneLoc check-in PR (dnceng/internal only).
-  # The infrastructure identifiers are centralized here and the App path is enabled by default.
-  # DevDiv requires its own project-scoped service connection before this path can be enabled there.
+  # GitHub App authentication for the OneLoc check-in PR.
+  # dnceng/internal and DevDiv/DevDiv are enabled by default with their project-scoped service
+  # connections. Other projects must explicitly opt in after provisioning equivalent infrastructure.
   UseGitHubAppAuthentication: true
+  UseGitHubAppAuthenticationInOtherProjects: false
   GitHubAppServiceConnection: 'dnceng-oneloc-githubapp'
   GitHubAppClientId: 'Iv23lijBU8x3gc9lDOc9'
   GitHubAppKeyVaultName: 'EngKeyVault'
@@ -97,13 +98,16 @@ jobs:
           outputVariableName: 'CeapexEntraToken'
           condition: ${{ parameters.condition }}
 
-    # Mint a short-lived GitHub App installation token for the loc check-in PR (dnceng/internal only).
-    # All other projects fall back to PAT-based auth, since the app service connection is scoped to dnceng/internal.
-    - ${{ if and(eq(parameters.RepoType, 'gitHub'), eq(parameters.UseGitHubAppAuthentication, true), eq(variables['System.TeamProject'], 'internal')) }}:
+    # Mint a short-lived GitHub App installation token for the loc check-in PR. Use the connection
+    # provisioned in each supported project; other projects must explicitly opt in and override it.
+    - ${{ if and(eq(parameters.RepoType, 'gitHub'), eq(parameters.UseGitHubAppAuthentication, true), or(eq(variables['System.TeamProject'], 'internal'), eq(variables['System.TeamProject'], 'DevDiv'), eq(parameters.UseGitHubAppAuthenticationInOtherProjects, true))) }}:
       - template: /eng/common/core-templates/steps/get-github-app-token.yml
         parameters:
           is1ESPipeline: ${{ parameters.is1ESPipeline }}
-          azureSubscription: ${{ parameters.GitHubAppServiceConnection }}
+          ${{ if and(eq(variables['System.TeamProject'], 'DevDiv'), eq(parameters.GitHubAppServiceConnection, 'dnceng-oneloc-githubapp')) }}:
+            azureSubscription: 'devdiv-oneloc-githubapp'
+          ${{ else }}:
+            azureSubscription: ${{ parameters.GitHubAppServiceConnection }}
           keyVaultName: ${{ parameters.GitHubAppKeyVaultName }}
           keyName: ${{ parameters.GitHubAppKeyName }}
           appClientId: ${{ parameters.GitHubAppClientId }}
@@ -132,9 +136,9 @@ jobs:
           patVariable: ${{ parameters.CeapexPat }}
         ${{ if eq(parameters.RepoType, 'gitHub') }}:
           repoType: ${{ parameters.RepoType }}
-          ${{ if and(eq(parameters.UseGitHubAppAuthentication, true), eq(variables['System.TeamProject'], 'internal')) }}:
+          ${{ if and(eq(parameters.UseGitHubAppAuthentication, true), or(eq(variables['System.TeamProject'], 'internal'), eq(variables['System.TeamProject'], 'DevDiv'), eq(parameters.UseGitHubAppAuthenticationInOtherProjects, true))) }}:
             gitHubPatVariable: "$(GitHubAppInstallationToken)"
-          ${{ if or(eq(parameters.UseGitHubAppAuthentication, false), ne(variables['System.TeamProject'], 'internal')) }}:
+          ${{ else }}:
             gitHubPatVariable: "${{ parameters.GithubPat }}"
         ${{ if ne(parameters.MirrorRepo, '') }}:
           isMirrorRepoSelected: true
diff --git a/global.json b/global.json
index cfa65a37d..8af7eedbc 100644
--- a/global.json
+++ b/global.json
@@ -3,7 +3,7 @@
     "dotnet": "10.0.111"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "10.0.0-beta.26414.3",
-    "Microsoft.DotNet.Helix.Sdk": "10.0.0-beta.26414.3"
+    "Microsoft.DotNet.Arcade.Sdk": "10.0.0-beta.26423.1",
+    "Microsoft.DotNet.Helix.Sdk": "10.0.0-beta.26423.1"
   }
 }