diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index e8fb6ffb8b3..75834531c8b 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -27,7 +27,7 @@ This file should be imported by eng/Versions.props
     <MicrosoftCodeAnalysisFeaturesPackageVersion>5.0.0-2.25480.7</MicrosoftCodeAnalysisFeaturesPackageVersion>
     <MicrosoftVisualStudioLanguageServicesPackageVersion>5.0.0-2.25480.7</MicrosoftVisualStudioLanguageServicesPackageVersion>
     <!-- dotnet/arcade dependencies -->
-    <MicrosoftDotNetArcadeSdkPackageVersion>11.0.0-beta.25569.5</MicrosoftDotNetArcadeSdkPackageVersion>
+    <MicrosoftDotNetArcadeSdkPackageVersion>11.0.0-beta.25571.8</MicrosoftDotNetArcadeSdkPackageVersion>
     <!-- _git/dotnet-optimization dependencies -->
     <optimizationlinuxarm64MIBCRuntimePackageVersion>1.0.0-prerelease.25502.1</optimizationlinuxarm64MIBCRuntimePackageVersion>
     <optimizationlinuxx64MIBCRuntimePackageVersion>1.0.0-prerelease.25502.1</optimizationlinuxx64MIBCRuntimePackageVersion>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 1901bc115cd..6f68631a45f 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -76,9 +76,9 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="11.0.0-beta.25569.5">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="11.0.0-beta.25571.8">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>d0dd6fd98074a55efc1bfe63297467c706058a56</Sha>
+      <Sha>a8b9e73f56e84dcb4c7ed0f23f79b308b4f83a01</Sha>
     </Dependency>
     <Dependency Name="optimization.windows_nt-x64.MIBC.Runtime" Version="1.0.0-prerelease.25502.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
diff --git a/eng/common/core-templates/job/source-build.yml b/eng/common/core-templates/job/source-build.yml
index 9f6b3ee9e46..9d820f97421 100644
--- a/eng/common/core-templates/job/source-build.yml
+++ b/eng/common/core-templates/job/source-build.yml
@@ -63,7 +63,7 @@ jobs:
           demands: ImageOverride -equals build.ubuntu.2204.amd64
         ${{ if eq(variables['System.TeamProject'], 'internal') }}:
           name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore1ESPool-Svc-Internal'), False, 'NetCore1ESPool-Internal')]
-          image: 1es-mariner-2
+          image: 1es-azurelinux-3
           os: linux
     ${{ else }}:
       pool:
diff --git a/eng/common/core-templates/steps/install-microbuild.yml b/eng/common/core-templates/steps/install-microbuild.yml
index bdebec0eaa9..4f4b56ed2a6 100644
--- a/eng/common/core-templates/steps/install-microbuild.yml
+++ b/eng/common/core-templates/steps/install-microbuild.yml
@@ -13,9 +13,8 @@ parameters:
   # Unfortunately, _SignType can't be used to exclude the use of the service connection in non-real sign scenarios. The
   # variable is not available in template expression. _SignType has a very large proliferation across .NET, so replacing it is tough.
   microbuildUseESRP: true
-  # Location of the MicroBuild output folder
-  # NOTE: There's something that relies on this being in the "default" source directory for tasks such as Signing to work properly.
-  microBuildOutputFolder: '$(Build.SourcesDirectory)'
+  # Microbuild installation directory
+  microBuildOutputFolder: $(Agent.TempDirectory)/MicroBuild
   # Microbuild version
   microbuildPluginVersion: 'latest'
 
@@ -30,8 +29,27 @@ steps:
         inputs:
           packageType: sdk
           version: 8.0.x
-          installationPath: ${{ parameters.microBuildOutputFolder }}/.dotnet
-          workingDirectory: ${{ parameters.microBuildOutputFolder }}
+          installationPath: ${{ parameters.microBuildOutputFolder }}/.dotnet-microbuild
+        condition: and(succeeded(), ne(variables['Agent.Os'], 'Windows_NT'))
+
+      - script: |
+          set -euo pipefail
+
+          # UseDotNet@2 prepends the dotnet executable path to the PATH variable, so we can call dotnet directly
+          version=$(dotnet --version)
+          cat << 'EOF' > ${{ parameters.microBuildOutputFolder }}/global.json
+          {
+            "sdk": {
+              "version": "$version",
+              "paths": [
+                "${{ parameters.microBuildOutputFolder }}/.dotnet-microbuild"
+              ],
+              "errorMessage": "The .NET SDK version $version is required to install the MicroBuild signing plugin."
+            }
+          }
+          EOF
+        displayName: 'Add global.json to MicroBuild Installation path'
+        workingDirectory: ${{ parameters.microBuildOutputFolder }}
         condition: and(succeeded(), ne(variables['Agent.Os'], 'Windows_NT'))
 
     - script: |
@@ -85,6 +103,7 @@ steps:
             zipSources: false
             feedSource: https://dnceng.pkgs.visualstudio.com/_packaging/MicroBuildToolset/nuget/v3/index.json
             version: ${{ parameters.microbuildPluginVersion }}
+            workingDirectory: ${{ parameters.microBuildOutputFolder }}
             ${{ if eq(parameters.microbuildUseESRP, true) }}:
               ConnectedServiceName: 'MicroBuild Signing Task (DevDiv)'
               ${{ if eq(variables['System.TeamProject'], 'DevDiv') }}:
diff --git a/global.json b/global.json
index d362a9f064c..ee3469b1d39 100644
--- a/global.json
+++ b/global.json
@@ -22,7 +22,7 @@
     "perl": "5.38.2.2"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "11.0.0-beta.25569.5",
+    "Microsoft.DotNet.Arcade.Sdk": "11.0.0-beta.25571.8",
     "Microsoft.DotNet.Helix.Sdk": "8.0.0-beta.23255.2"
   }
 }