diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 6e14fbc00..79cec85fc 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.26358.3">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="10.0.0-beta.26367.6">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>4e21b419f8adadeb519bee472464824b1cff603e</Sha>
+      <Sha>fe219b71a1195d92b067ef4e981e611c3fa10062</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.26358.3">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.26367.6">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>4e21b419f8adadeb519bee472464824b1cff603e</Sha>
+      <Sha>fe219b71a1195d92b067ef4e981e611c3fa10062</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/common/core-templates/job/onelocbuild.yml b/eng/common/core-templates/job/onelocbuild.yml
index eefed3b66..12d7e55a9 100644
--- a/eng/common/core-templates/job/onelocbuild.yml
+++ b/eng/common/core-templates/job/onelocbuild.yml
@@ -8,6 +8,12 @@ parameters:
   CeapexPat: $(dn-bot-ceapex-package-r) # PAT for the loc AzDO instance https://dev.azure.com/ceapex
   GithubPat: $(BotAccount-dotnet-bot-repo-PAT)
 
+  # Service connection for WIF-based Entra authentication to ceapex feeds (replaces CeapexPat).
+  # When set, dnceng/internal builds acquire a federated Entra token instead of using a PAT.
+  # All other projects (e.g. DevDiv, public), where this dnceng-scoped service connection does not
+  # exist, and any pipeline that sets this to '' fall back to PAT-based auth via the CeapexPat parameter.
+  CeapexServiceConnection: 'dnceng-onelocbuild-ceapex'
+
   SourcesDirectory: $(System.DefaultWorkingDirectory)
   CreatePr: true
   AutoCompletePr: false
@@ -73,6 +79,15 @@ jobs:
         displayName: Generate LocProject.json
         condition: ${{ parameters.condition }}
 
+    # Acquire an Entra token for ceapex feed access via WIF (dnceng/internal only).
+    # All other projects use PAT-based auth, since the ceapex service connection is scoped to dnceng/internal.
+    - ${{ if and(ne(parameters.CeapexServiceConnection, ''), eq(variables['System.TeamProject'], 'internal')) }}:
+      - template: /eng/common/templates/steps/get-federated-access-token.yml
+        parameters:
+          federatedServiceConnection: ${{ parameters.CeapexServiceConnection }}
+          outputVariableName: 'CeapexEntraToken'
+          condition: ${{ parameters.condition }}
+
     - task: OneLocBuild@2
       displayName: OneLocBuild
       env:
@@ -88,7 +103,10 @@ jobs:
           isUseLfLineEndingsSelected: ${{ parameters.UseLfLineEndings }}
           isShouldReusePrSelected: ${{ parameters.ReusePr }}
         packageSourceAuth: patAuth
-        patVariable: ${{ parameters.CeapexPat }}
+        ${{ if and(ne(parameters.CeapexServiceConnection, ''), eq(variables['System.TeamProject'], 'internal')) }}:
+          patVariable: $(CeapexEntraToken)
+        ${{ if or(eq(parameters.CeapexServiceConnection, ''), ne(variables['System.TeamProject'], 'internal')) }}:
+          patVariable: ${{ parameters.CeapexPat }}
         ${{ if eq(parameters.RepoType, 'gitHub') }}:
           repoType: ${{ parameters.RepoType }}
           gitHubPatVariable: "${{ parameters.GithubPat }}"
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index 977a2d4b1..c6a1d6eae 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -732,7 +732,7 @@ function InitializeToolset() {
 
   '<Project Sdk="Microsoft.DotNet.Arcade.Sdk"/>' | Set-Content $proj
 
-  MSBuild-Core $proj $bl /t:__WriteToolsetLocation /clp:ErrorsOnly`;NoSummary /p:__ToolsetLocationOutputFile=$toolsetLocationFile
+  MSBuild-Core $proj $bl /t:__WriteToolsetLocation /clp:ErrorsOnly`;NoSummary /p:__ToolsetLocationOutputFile=$toolsetLocationFile /p:RestoreIgnoreFailedSources=true
 
   $path = Get-Content $toolsetLocationFile -Encoding UTF8 -TotalCount 1
   if (!(Test-Path $path)) {
diff --git a/eng/common/tools.sh b/eng/common/tools.sh
index 1b296f646..62aeb73fe 100755
--- a/eng/common/tools.sh
+++ b/eng/common/tools.sh
@@ -430,7 +430,7 @@ function InitializeToolset {
   fi
 
   echo '<Project Sdk="Microsoft.DotNet.Arcade.Sdk"/>' > "$proj"
-  MSBuild-Core "$proj" $bl /t:__WriteToolsetLocation /clp:ErrorsOnly\;NoSummary /p:__ToolsetLocationOutputFile="$toolset_location_file"
+  MSBuild-Core "$proj" $bl /t:__WriteToolsetLocation /clp:ErrorsOnly\;NoSummary /p:__ToolsetLocationOutputFile="$toolset_location_file" /p:RestoreIgnoreFailedSources=true
 
   local toolset_build_proj=`cat "$toolset_location_file"`
 
diff --git a/global.json b/global.json
index 68b8a913f..2f6b0c4db 100644
--- a/global.json
+++ b/global.json
@@ -3,7 +3,7 @@
     "dotnet": "10.0.109"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "10.0.0-beta.26358.3",
-    "Microsoft.DotNet.Helix.Sdk": "10.0.0-beta.26358.3"
+    "Microsoft.DotNet.Arcade.Sdk": "10.0.0-beta.26367.6",
+    "Microsoft.DotNet.Helix.Sdk": "10.0.0-beta.26367.6"
   }
 }