diff --git a/NuGet.config b/NuGet.config
index 49a072a847f..dec1baffe92 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -8,7 +8,6 @@
     <!--  Begin: Package sources from dotnet-runtime -->
     <!--  End: Package sources from dotnet-runtime -->
     <!--  Begin: Package sources from dotnet-android -->
-    <add key="darc-pub-dotnet-android-350a375-1" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-android-350a375f-1/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-android -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <!-- ensure only the sources defined below are used -->
diff --git a/build-tools/scripts/XAVersionInfo.targets b/build-tools/scripts/XAVersionInfo.targets
index bfc6809bd32..e21107348e5 100644
--- a/build-tools/scripts/XAVersionInfo.targets
+++ b/build-tools/scripts/XAVersionInfo.targets
@@ -1,11 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitBlame" TaskFactory="TaskHostFactory" Runtime="NET" />
-  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitBranch" TaskFactory="TaskHostFactory" Runtime="NET" />
-  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitHash" TaskFactory="TaskHostFactory" Runtime="NET" />
-  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitsInRange" TaskFactory="TaskHostFactory" Runtime="NET" />
-  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitTime" TaskFactory="TaskHostFactory" Runtime="NET" />
-  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitInfo" TaskFactory="TaskHostFactory" Runtime="NET" />
+  <!-- NOTE: Do NOT use TaskFactory="TaskHostFactory" Runtime="NET" on these UsingTask elements.
+       MSBuild 18+ (dotnet/msbuild#13175) added app host support which changed how TaskHostFactory
+       spawns .NET task hosts. The MetadataLoadContext used to inspect task assemblies is disposed
+       before output validation completes, causing MSB4027. TaskHostFactory without Runtime="NET"
+       still infers .NET on .NET Core MSBuild, so it must be removed entirely. These tasks only
+       run git commands and don't need out-of-proc isolation. -->
+  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitBlame" />
+  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitBranch" />
+  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitHash" />
+  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitsInRange" />
+  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitTime" />
+  <UsingTask AssemblyFile="$(PrepTasksAssembly)"  TaskName="Xamarin.Android.BuildTools.PrepTasks.GitCommitInfo" />
   <Target Name="_GetSubmodulesVersionInfo">
     <ItemGroup>
       <!-- If anything changes in this list, make sure to update:
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 35fa97a6855..9c22efe1715 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,28 +1,28 @@
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.NET.Sdk" Version="11.0.100-preview.3.26157.103">
+    <Dependency Name="Microsoft.NET.Sdk" Version="11.0.100-preview.3.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.ILLink" Version="11.0.0-preview.3.26157.103">
+    <Dependency Name="Microsoft.NET.ILLink" Version="11.0.0-preview.3.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NETCore.App.Ref" Version="11.0.0-preview.3.26157.103">
+    <Dependency Name="Microsoft.NETCore.App.Ref" Version="11.0.0-preview.3.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Cecil" Version="0.11.5-preview.26157.103">
+    <Dependency Name="Microsoft.DotNet.Cecil" Version="0.11.5-preview.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Workload.Mono.ToolChain.Current.Manifest-11.0.100-preview.3" Version="11.0.0-preview.3.26157.103">
+    <Dependency Name="Microsoft.NET.Workload.Mono.ToolChain.Current.Manifest-11.0.100-preview.3" Version="11.0.0-preview.3.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.NET.Workload.Emscripten.Current.Manifest-11.0.100-preview.3" Version="11.0.100-preview.3.26157.103">
+    <Dependency Name="Microsoft.NET.Workload.Emscripten.Current.Manifest-11.0.100-preview.3" Version="11.0.100-preview.3.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
     <!-- Previous .NET version -->
     <Dependency Name="Microsoft.NET.Workload.Mono.ToolChain.Current.Manifest-9.0.100" Version="9.0.12">
@@ -36,13 +36,13 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="11.0.0-beta.26157.103">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="11.0.0-beta.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.TemplateEngine.Authoring.Tasks" Version="11.0.100-preview.3.26157.103">
+    <Dependency Name="Microsoft.TemplateEngine.Authoring.Tasks" Version="11.0.100-preview.3.26165.107">
       <Uri>https://github.com/dotnet/dotnet</Uri>
-      <Sha>ee56b9a0106c983775a0691bde4a4a988f4351d3</Sha>
+      <Sha>5ff448a6425ec6980e08b5c9a35e454c8a843c35</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/Versions.props b/eng/Versions.props
index be91396aa21..36d64cc505f 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -1,20 +1,20 @@
 <Project>
   <!--Package versions-->
   <PropertyGroup>
-    <MicrosoftNETSdkPackageVersion>11.0.100-preview.3.26157.103</MicrosoftNETSdkPackageVersion>
+    <MicrosoftNETSdkPackageVersion>11.0.100-preview.3.26165.107</MicrosoftNETSdkPackageVersion>
     <MicrosoftDotnetSdkInternalPackageVersion>$(MicrosoftNETSdkPackageVersion)</MicrosoftDotnetSdkInternalPackageVersion>
-    <MicrosoftNETILLinkPackageVersion>11.0.0-preview.3.26157.103</MicrosoftNETILLinkPackageVersion>
-    <MicrosoftNETCoreAppRefPackageVersion>11.0.0-preview.3.26157.103</MicrosoftNETCoreAppRefPackageVersion>
+    <MicrosoftNETILLinkPackageVersion>11.0.0-preview.3.26165.107</MicrosoftNETILLinkPackageVersion>
+    <MicrosoftNETCoreAppRefPackageVersion>11.0.0-preview.3.26165.107</MicrosoftNETCoreAppRefPackageVersion>
     <MicrosoftDotNetApiCompatPackageVersion>7.0.0-beta.22103.1</MicrosoftDotNetApiCompatPackageVersion>
     <!-- Last version built for net10.0, needed for CI steps that only have the .NET 10 SDK installed (e.g., BAR manifest publishing) -->
     <MicrosoftDotNetBuildTasksFeedPackageVersionNet10>11.0.0-beta.26060.102</MicrosoftDotNetBuildTasksFeedPackageVersionNet10>
-    <MicrosoftDotNetBuildTasksFeedPackageVersion>11.0.0-beta.26157.103</MicrosoftDotNetBuildTasksFeedPackageVersion>
-    <MicrosoftNETWorkloadMonoToolChainCurrentManifest110100preview3PackageVersion>11.0.0-preview.3.26157.103</MicrosoftNETWorkloadMonoToolChainCurrentManifest110100preview3PackageVersion>
-    <MicrosoftNETWorkloadEmscriptenCurrentManifest110100preview3PackageVersion>11.0.100-preview.3.26157.103</MicrosoftNETWorkloadEmscriptenCurrentManifest110100preview3PackageVersion>
+    <MicrosoftDotNetBuildTasksFeedPackageVersion>11.0.0-beta.26165.107</MicrosoftDotNetBuildTasksFeedPackageVersion>
+    <MicrosoftNETWorkloadMonoToolChainCurrentManifest110100preview3PackageVersion>11.0.0-preview.3.26165.107</MicrosoftNETWorkloadMonoToolChainCurrentManifest110100preview3PackageVersion>
+    <MicrosoftNETWorkloadEmscriptenCurrentManifest110100preview3PackageVersion>11.0.100-preview.3.26165.107</MicrosoftNETWorkloadEmscriptenCurrentManifest110100preview3PackageVersion>
     <MicrosoftNETWorkloadMonoToolChainPackageVersion>$(MicrosoftNETWorkloadMonoToolChainCurrentManifest110100preview3PackageVersion)</MicrosoftNETWorkloadMonoToolChainPackageVersion>
     <MicrosoftNETWorkloadEmscriptenPackageVersion>$(MicrosoftNETWorkloadEmscriptenCurrentManifest110100preview3PackageVersion)</MicrosoftNETWorkloadEmscriptenPackageVersion>
-    <MicrosoftTemplateEngineAuthoringTasksPackageVersion>11.0.100-preview.3.26157.103</MicrosoftTemplateEngineAuthoringTasksPackageVersion>
-    <MicrosoftDotNetCecilPackageVersion>0.11.5-preview.26157.103</MicrosoftDotNetCecilPackageVersion>
+    <MicrosoftTemplateEngineAuthoringTasksPackageVersion>11.0.100-preview.3.26165.107</MicrosoftTemplateEngineAuthoringTasksPackageVersion>
+    <MicrosoftDotNetCecilPackageVersion>0.11.5-preview.26165.107</MicrosoftDotNetCecilPackageVersion>
     <SystemIOHashingPackageVersion>9.0.4</SystemIOHashingPackageVersion>
     <SystemReflectionMetadataPackageVersion>11.0.0-preview.1.26104.118</SystemReflectionMetadataPackageVersion>
     <!-- Previous .NET Android version -->
diff --git a/src/Xamarin.Android.Build.Tasks/Tests/Xamarin.ProjectTools/Common/DotNetCLI.cs b/src/Xamarin.Android.Build.Tasks/Tests/Xamarin.ProjectTools/Common/DotNetCLI.cs
index 32135f406c8..eec0361c108 100644
--- a/src/Xamarin.Android.Build.Tasks/Tests/Xamarin.ProjectTools/Common/DotNetCLI.cs
+++ b/src/Xamarin.Android.Build.Tasks/Tests/Xamarin.ProjectTools/Common/DotNetCLI.cs
@@ -42,6 +42,10 @@ protected Process ExecuteProcess (params string [] args)
 			p.StartInfo.RedirectStandardOutput = true;
 			p.StartInfo.RedirectStandardError = true;
 			p.StartInfo.SetEnvironmentVariable ("DOTNET_MULTILEVEL_LOOKUP", "0");
+			// Workaround for dotnet/msbuild#13175: the MSBuild app host needs DOTNET_HOST_PATH
+			// to bootstrap the .NET runtime when spawning TaskHostFactory task hosts (e.g. ILLink).
+			// Without this, builds fail with MSB4221 when using a locally-installed SDK.
+			p.StartInfo.SetEnvironmentVariable ("DOTNET_HOST_PATH", p.StartInfo.FileName);
 			p.StartInfo.SetEnvironmentVariable ("PATH", TestEnvironment.DotNetPreviewDirectory + Path.PathSeparator + Environment.GetEnvironmentVariable ("PATH"));
 			if (TestEnvironment.UseLocalBuildOutput) {
 				p.StartInfo.SetEnvironmentVariable ("DOTNETSDK_WORKLOAD_MANIFEST_ROOTS", TestEnvironment.WorkloadManifestOverridePath);