diff --git a/.config/dotnet-tools.json b/.config/dotnet-tools.json
index 67ac0d5578a08b..049440b628b4a5 100644
--- a/.config/dotnet-tools.json
+++ b/.config/dotnet-tools.json
@@ -15,7 +15,7 @@
       ]
     },
     "microsoft.dotnet.xharness.cli": {
-      "version": "8.0.0-prerelease.25516.2",
+      "version": "11.0.0-prerelease.26168.1",
       "commands": [
         "xharness"
       ]
diff --git a/NuGet.config b/NuGet.config
index d74fa2a4c62854..f6e25f4daf50d1 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -9,7 +9,6 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-emsdk -->
-    <add key="darc-pub-dotnet-emsdk-badf9f9" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-badf9f97/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-emsdk -->
     <!--  Begin: Package sources from dotnet-sdk -->
     <!--  End: Package sources from dotnet-sdk -->
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 1a0ec00cba10bf..fd743fa87e75f5 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -322,17 +322,17 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>edbd5c769a19798b6955050baccf99e6797d3208</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XHarness.TestRunners.Common" Version="8.0.0-prerelease.25516.2">
+    <Dependency Name="Microsoft.DotNet.XHarness.TestRunners.Common" Version="11.0.0-prerelease.26168.1">
       <Uri>https://github.com/dotnet/xharness</Uri>
-      <Sha>402df9c4f5abe6ee8519181dfb5481e04099fab0</Sha>
+      <Sha>607b3de9cf2dbfec6734e686e68d2813b40b2b51</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XHarness.TestRunners.Xunit" Version="8.0.0-prerelease.25516.2">
+    <Dependency Name="Microsoft.DotNet.XHarness.TestRunners.Xunit" Version="11.0.0-prerelease.26168.1">
       <Uri>https://github.com/dotnet/xharness</Uri>
-      <Sha>402df9c4f5abe6ee8519181dfb5481e04099fab0</Sha>
+      <Sha>607b3de9cf2dbfec6734e686e68d2813b40b2b51</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XHarness.CLI" Version="8.0.0-prerelease.25516.2">
+    <Dependency Name="Microsoft.DotNet.XHarness.CLI" Version="11.0.0-prerelease.26168.1">
       <Uri>https://github.com/dotnet/xharness</Uri>
-      <Sha>402df9c4f5abe6ee8519181dfb5481e04099fab0</Sha>
+      <Sha>607b3de9cf2dbfec6734e686e68d2813b40b2b51</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.PackageTesting" Version="8.0.0-beta.26112.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 2e92fa2c580cf1..928608910f3d17 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -197,9 +197,9 @@
     <!-- Testing -->
     <MicrosoftNETCoreCoreDisToolsVersion>1.1.0</MicrosoftNETCoreCoreDisToolsVersion>
     <MicrosoftNETTestSdkVersion>17.4.0-preview-20220707-01</MicrosoftNETTestSdkVersion>
-    <MicrosoftDotNetXHarnessTestRunnersCommonVersion>8.0.0-prerelease.25516.2</MicrosoftDotNetXHarnessTestRunnersCommonVersion>
-    <MicrosoftDotNetXHarnessTestRunnersXunitVersion>8.0.0-prerelease.25516.2</MicrosoftDotNetXHarnessTestRunnersXunitVersion>
-    <MicrosoftDotNetXHarnessCLIVersion>8.0.0-prerelease.25516.2</MicrosoftDotNetXHarnessCLIVersion>
+    <MicrosoftDotNetXHarnessTestRunnersCommonVersion>11.0.0-prerelease.26168.1</MicrosoftDotNetXHarnessTestRunnersCommonVersion>
+    <MicrosoftDotNetXHarnessTestRunnersXunitVersion>11.0.0-prerelease.26168.1</MicrosoftDotNetXHarnessTestRunnersXunitVersion>
+    <MicrosoftDotNetXHarnessCLIVersion>11.0.0-prerelease.26168.1</MicrosoftDotNetXHarnessCLIVersion>
     <MicrosoftDotNetHotReloadUtilsGeneratorBuildToolVersion>8.0.0-alpha.0.26116.3</MicrosoftDotNetHotReloadUtilsGeneratorBuildToolVersion>
     <XUnitVersion>2.4.2</XUnitVersion>
     <XUnitAnalyzersVersion>1.0.0</XUnitAnalyzersVersion>
diff --git a/src/tests/Common/XHarnessRunnerLibrary/GeneratedTestRunner.cs b/src/tests/Common/XHarnessRunnerLibrary/GeneratedTestRunner.cs
index c30c99f7e33061..b442eee448fadd 100644
--- a/src/tests/Common/XHarnessRunnerLibrary/GeneratedTestRunner.cs
+++ b/src/tests/Common/XHarnessRunnerLibrary/GeneratedTestRunner.cs
@@ -48,14 +48,14 @@ public override Task Run(IEnumerable<TestAssemblyInfo> testAssemblies)
         return Task.CompletedTask;
     }
 
-    public override string WriteResultsToFile(XmlResultJargon xmlResultJargon)
+    public override Task<string> WriteResultsToFile(XmlResultJargon xmlResultJargon)
     {
         Debug.Assert(xmlResultJargon == XmlResultJargon.xUnit);
         File.WriteAllText(ResultsFileName, LastTestRun.GetTestResultOutput(_assemblyName));
-        return ResultsFileName;
+        return Task.FromResult(ResultsFileName);
     }
 
-    public override void WriteResultsToFile(TextWriter writer, XmlResultJargon jargon)
+    public override Task WriteResultsToFile(TextWriter writer, XmlResultJargon jargon)
     {
         Debug.Assert(jargon == XmlResultJargon.xUnit);
         string lastTestResults = LastTestRun.GetTestResultOutput(_assemblyName);
@@ -69,6 +69,7 @@ public override void WriteResultsToFile(TextWriter writer, XmlResultJargon jargo
         {
             writer.WriteLine(lastTestResults);
         }
+        return Task.CompletedTask;
     }
 
     public override void SkipTests(IEnumerable<string> tests)