[main] Source code updates from dotnet/dotnet

[dotnet-maestro]

Note

This is a codeflow update. It may contain both source code changes from
the VMR
as well as dependency updates. Learn more here.

This pull request brings the following source code changes

From https://github.com/dotnet/dotnet

• Subscription: 94ba9a9b-a084-4c1e-bf44-d0c711c17773
• Build: 20260901.9 (329840)
• Date Produced: September 1, 2026 8:00:19 PM UTC
• Commit: f2b969981e123579eb8a779dc05aa8138569dff9
• Commit Diff: 64a2986...f2b9699
• Branch: main

New Dependencies

• Added 11.0.0-rc.1.26451.109
  • Microsoft.NET.Runtime.Emscripten.Internal

Removed Dependencies

• Removed 11.0.0-preview.7.26360.111
  • Microsoft.NET.Runtime.Emscripten.5.0.6.Cache.win-x64

Updated Dependencies

• From 11.0.0-rc.1.26410.101 to 11.0.0-rc.1.26451.109
  • Microsoft.AspNetCore.Analyzers
  • Microsoft.AspNetCore.App.Ref
  • Microsoft.AspNetCore.App.Ref.Internal
  • Microsoft.AspNetCore.Authentication.Facebook
  • Microsoft.AspNetCore.Authentication.Google
  • Microsoft.AspNetCore.Authentication.MicrosoftAccount
  • Microsoft.AspNetCore.Authorization
  • Microsoft.AspNetCore.Components
  • Microsoft.AspNetCore.Components.Analyzers
  • Microsoft.AspNetCore.Components.Forms
  • Microsoft.AspNetCore.Components.SdkAnalyzers
  • Microsoft.AspNetCore.Components.Web
  • Microsoft.AspNetCore.Components.WebAssembly
  • Microsoft.AspNetCore.Components.WebAssembly.Server
  • Microsoft.AspNetCore.Components.WebView
  • Microsoft.AspNetCore.DeveloperCertificates.XPlat
  • Microsoft.AspNetCore.Metadata
  • Microsoft.AspNetCore.Mvc.Analyzers
  • Microsoft.AspNetCore.TestHost
  • Microsoft.Bcl.AsyncInterfaces
  • Microsoft.DotNet.Web.ItemTemplates.11.0
  • Microsoft.DotNet.Web.ProjectTemplates.11.0
  • Microsoft.Dotnet.WinForms.ProjectTemplates
  • Microsoft.DotNet.Wpf.ProjectTemplates
  • Microsoft.Extensions.Configuration.Ini
  • Microsoft.Extensions.DependencyInjection.Abstractions
  • Microsoft.Extensions.DependencyModel
  • Microsoft.Extensions.FileProviders.Abstractions
  • Microsoft.Extensions.FileProviders.Embedded
  • Microsoft.Extensions.FileSystemGlobbing
  • Microsoft.Extensions.Logging
  • Microsoft.Extensions.Logging.Abstractions
  • Microsoft.Extensions.Logging.Console
  • Microsoft.Extensions.ObjectPool
  • Microsoft.JSInterop
  • Microsoft.McpServer.ProjectTemplates.11.0
  • Microsoft.NET.HostModel
  • Microsoft.NET.ILLink.Tasks
  • Microsoft.NET.Sdk.WindowsDesktop
  • Microsoft.NETCore.App.Ref
  • Microsoft.NETCore.Platforms
  • Microsoft.Win32.SystemEvents
  • Microsoft.WindowsDesktop.App.Internal
  • Microsoft.WindowsDesktop.App.Ref
  • System.CodeDom
  • System.ComponentModel.Composition
  • System.Composition.AttributedModel
  • System.Composition.Convention
  • System.Composition.Hosting
  • System.Composition.Runtime
  • System.Composition.TypedParts
  • System.Configuration.ConfigurationManager
  • System.Diagnostics.DiagnosticSource
  • System.Formats.Asn1
  • System.IO.Hashing
  • System.Reflection.MetadataLoadContext
  • System.Resources.Extensions
  • System.Security.Cryptography.Pkcs
  • System.Security.Cryptography.ProtectedData
  • System.Security.Cryptography.Xml
  • System.Security.Permissions
  • System.ServiceProcess.ServiceController
  • System.Text.Encoding.CodePages
  • System.Text.Json
  • System.Windows.Extensions
• From 11.1.0-preview.26410.101 to 11.1.0-preview.26451.109
  • Microsoft.AspNetCore.Mvc.Razor.Extensions.Tooling.Internal
  • Microsoft.CodeAnalysis.Razor.Tooling.Internal
  • Microsoft.NET.Sdk.Razor.SourceGenerators.Transport
• From 18.11.0-1.26410.101 to 18.12.0-1.26451.109
  • Microsoft.Build
  • Microsoft.Build.Localization
  • Microsoft.Build.TaskAuthoring.Analyzer
• From 7.11.0-rc.41101 to 7.11.0-rc.45209
  • Microsoft.Build.NuGetSdkResolver
  • NuGet.Build.Tasks
  • NuGet.Build.Tasks.Console
  • NuGet.Build.Tasks.Pack
  • NuGet.CommandLine.XPlat
  • NuGet.Commands
  • NuGet.Common
  • NuGet.Configuration
  • NuGet.Credentials
  • NuGet.DependencyResolver.Core
  • NuGet.Frameworks
  • NuGet.LibraryModel
  • NuGet.Localization
  • NuGet.Packaging
  • NuGet.ProjectModel
  • NuGet.Protocol
  • NuGet.Versioning
• From 11.0.100-rc.1.26410.101 to 11.0.100-rc.1.26451.109
  • Microsoft.Build.Tasks.Git
  • Microsoft.SourceLink.AzureRepos.Git
  • Microsoft.SourceLink.Bitbucket.Git
  • Microsoft.SourceLink.Common
  • Microsoft.SourceLink.GitHub
  • Microsoft.SourceLink.GitLab
• From 5.11.0-1.26410.101 to 5.12.0-1.26451.109
  • Microsoft.CodeAnalysis
  • Microsoft.CodeAnalysis.Analyzers
  • Microsoft.CodeAnalysis.BuildClient
  • Microsoft.CodeAnalysis.CSharp
  • Microsoft.CodeAnalysis.CSharp.CodeStyle
  • Microsoft.CodeAnalysis.CSharp.Features
  • Microsoft.CodeAnalysis.CSharp.Workspaces
  • Microsoft.CodeAnalysis.ExternalAccess.HotReload
  • Microsoft.CodeAnalysis.PublicApiAnalyzers
  • Microsoft.CodeAnalysis.Workspaces.Common
  • Microsoft.CodeAnalysis.Workspaces.MSBuild
  • Microsoft.Net.Compilers.Toolset
  • Microsoft.Net.Compilers.Toolset.Framework
• From 2.0.0-preview.1.26410.101 to 2.0.0-preview.1.26451.109
  • Microsoft.Deployment.DotNet.Releases
• From 3.0.0-rc.1.26410.101 to 3.0.0-rc.1.26451.109
  • Microsoft.DiaSymReader
  • System.CommandLine
• From 11.0.0-beta.26410.101 to 11.0.0-beta.26451.109
  • Microsoft.DotNet.Arcade.Sdk
  • Microsoft.DotNet.Build.Tasks.Installers
  • Microsoft.DotNet.Build.Tasks.Templating
  • Microsoft.DotNet.Build.Tasks.Workloads
  • Microsoft.DotNet.Helix.Sdk
  • Microsoft.DotNet.SignTool
  • Microsoft.DotNet.XliffTasks
  • Microsoft.DotNet.XUnitV3Extensions
• From 11.0.0-beta.26427.10 to 11.0.0-beta.26451.109
  • Microsoft.DotNet.Helix.JobMonitor
• From 15.2.101-rc1.26410.101 to 15.2.101-rc1.26451.109
  • Microsoft.FSharp.Compiler
• From 18.11.0-preview-26410-101 to 18.12.0-preview-26451-109
  • Microsoft.NET.Test.Sdk
  • Microsoft.TestPlatform.Build
  • Microsoft.TestPlatform.CLI
• From 3.3.0-rc.1.26410.101 to 3.3.0-rc.1.26451.109
  • Microsoft.Web.Xdt

Associated changes in source repos

• dotnet/arcade@d89b0f5...306225d
• dotnet/aspnetcore@31b9bcd...175bdb1
• dotnet/cecil@74999f2...e8e6dc4
• dotnet/command-line-api@bc16495...1f13873
• dotnet/deployment-tools@3ccca8e...2ee21e1
• dotnet/diagnostics@f7bf65b...d828f24
• dotnet/efcore@dbf9771...30507f6
• dotnet/emsdk@bf28440...efe3547
• dotnet/fsharp@ea778bb...f380785
• dotnet/msbuild@e02ab1f...595f954
• NuGet/NuGet.Client@a4c3e09...a173713
• dotnet/roslyn@513d669...d070855
• dotnet/runtime@26b8250...ab5af9e
• ddbc6ec...198ec8f
• dotnet/source-build-assets@b70367d...cb99444
• dotnet/symreader@b579795...260aefc
• microsoft/vstest@0f85456...1eb42d5
• dotnet/windowsdesktop@5d631bd...8170e85
• dotnet/winforms@3dfb5be...8f11081
• dotnet/wpf@2ca0375...1cfc37f
• dotnet/xdt@0d57d4b...2414cbd

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/dotnet/dotnet:f2b969981e123579eb8a779dc05aa8138569dff9..https://github.com/dotnet/sdk:darc-main-897fd394-8acb-4c2d-8176-95554a75f382

[dotnet-maestro]

Note

VMR PRs included in this codeflow update:

• Add emsdk RepositoryReference to runtime for browser builds dotnet#8193
• [main] Source code updates from dotnet/sdk dotnet#8322
• [main] Source code updates from dotnet/sdk dotnet#8329
• [main] Source code updates from dotnet/sdk dotnet#8369
• [main] Source code updates from dotnet/sdk dotnet#8391
• [main] Source code updates from dotnet/sdk dotnet#8431
• [main] Source code updates from dotnet/sdk dotnet#8473
• [main] Source code updates from dotnet/sdk dotnet#8510
• [main] Source code updates from dotnet/sdk dotnet#8637
• [main] Source code updates from dotnet/sdk dotnet#8676
• [main] Source code updates from dotnet/sdk dotnet#8738
• [main] Source code updates from dotnet/sdk dotnet#8789
• [main] Source code updates from dotnet/roslyn dotnet#8731
• [main] Source code updates from dotnet/sdk dotnet#8829
• [main] Source code updates from dotnet/sdk dotnet#8841

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[azure-pipelines]

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Successfully started running 1 pipeline(s).
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[github-actions]

🔍 Build Failure Analysis

Summary — Every build leg (all 10: Windows/Linux/macOS x64/arm64, AOT and FullFramework variants) failed identically at NuGet restore, because this PR bumps several dependencies to version 11.0.0-rc.1.26431.109, but that exact version has not (yet) been published to the internal feeds — only 11.0.0-rc.2.26421.120 and earlier 11.0.0-rc.1.26410.101 are currently resolvable.

Root cause: Maestro dependency bump references an unpublished/unavailable package build

This is an automated dotnet/dotnet VMR codeflow PR. Its description states the dependency flow updated a large set of packages "From 11.0.0-rc.1.26410.101 to 11.0.0-rc.1.26431.109" (e.g. Microsoft.Extensions.DependencyModel, Microsoft.Extensions.Logging, Microsoft.Extensions.Logging.Console, System.CodeDom, System.Configuration.ConfigurationManager, System.IO.Hashing, System.Reflection.MetadataLoadContext, System.Resources.Extensions, System.Security.Cryptography.Pkcs/.ProtectedData/.Xml, and — critically — Microsoft.NETCore.App.Ref and Microsoft.AspNetCore.App.Ref).

At restore time, on every leg, NuGet reports:

• NU1603 (warning-as-error) for the packages above: the pinned version 11.0.0-rc.1.26431.109 "was not found"; NuGet fell back to 11.0.0-rc.2.26421.120, which is treated as an error because the projects set TreatWarningsAsErrors/no version-mismatch tolerance for restore.
• NU1102 for Microsoft.NETCore.App.Ref and Microsoft.AspNetCore.App.Ref at exactly 11.0.0-rc.1.26431.109 — the feed listing in the error shows the nearest available version in the dotnet11 feed is 11.0.0-rc.2.26421.120, i.e. 11.0.0-rc.1.26431.109 genuinely does not exist in the configured feeds at this time.

Because the exact same package/version pair fails identically across all Windows/Linux/macOS/x64/arm64/AOT/FullFramework legs, the failure is not platform- or code-specific — it is a single root cause: the Maestro subscription that produced this PR referenced a dotnet/dotnet VMR build (20260831.9) whose corresponding package version (11.0.0-rc.1.26431.109) had not finished publishing to the internal NuGet feeds (or was superseded/removed) by the time this build ran. A newer, compatible version (11.0.0-rc.2.26421.120) is available in the same dotnet11 feed instead.

Affected files

• eng/Version.Details.props / eng/Versions.props — pin the affected packages to 11.0.0-rc.1.26431.109 (auto-generated by Maestro; do not hand-edit — see below).
• Restore failures surfaced in essentially every test project across the tree (e.g. test/Msbuild.Tests.Utilities/Msbuild.Tests.Utilities.csproj, test/sdk-tasks.Tests/sdk-tasks.Tests.csproj, test/msbuild.Integration.Tests/msbuild.Integration.Tests.csproj, test/dotnet-format.*Tests, test/dotnet-watch-test-browser, etc.) because they all transitively depend on these packages.

Proposed fix

I don't see a source-level bug to patch here — the fix is operational, not code. Since eng/Version.Details.props/eng/Versions.props are Maestro-generated (per repo convention, must not be hand-edited), the correct remediation is one of:

1. Re-run/retry the build once 11.0.0-rc.1.26431.109 finishes publishing to the dotnet11 feed (likely a transient feed-propagation lag from the dotnet/dotnet build 20260831.9), or
2. If the version was genuinely pulled/superseded upstream, wait for Maestro to re-flow with the next available build (e.g. targeting 11.0.0-rc.2.26421.120, which every leg's error output shows as already present in the same feed), or update the subscription/darc channel as appropriate.

This looks like a feed-propagation flake tied to the specific VMR build timestamp rather than a code defect — recommend a re-run after confirming 11.0.0-rc.1.26431.109 is available on the dotnet11/dotnet11-transport feeds, or waiting for Maestro to produce a follow-up codeflow PR.

Build overview

• All 10 legs (Windows x64, Windows x64 AOT, Windows x64 FullFramework, Windows arm64 AOT, Linux x64, Linux x64 AOT, Linux arm64, Linux arm64 AOT, Mac arm64, Mac arm64 AOT) failed at the Restore target with the same NU1603/NU1102 errors.
• Failing task: RestoreTask on sdk.slnx.
• Requested/pinned version: 11.0.0-rc.1.26431.109; nearest resolved version reported by NuGet: 11.0.0-rc.2.26421.120 (present in the dotnet11 feed).

Representative MSBuild errors

Code	Project	Message (abridged)
NU1603	Msbuild.Tests.Utilities.csproj	Warning As Error: depends on Microsoft.Extensions.DependencyModel (>= 11.0.0-rc.1.26431.109) but that version was not found; 11.0.0-rc.2.26421.120 resolved instead
NU1102	Msbuild.Tests.Utilities.csproj	Unable to find package Microsoft.NETCore.App.Ref with version (= 11.0.0-rc.1.26431.109) — nearest in dotnet11 feed is 11.0.0-rc.2.26421.120
NU1102	Msbuild.Tests.Utilities.csproj	Unable to find package Microsoft.AspNetCore.App.Ref with version (= 11.0.0-rc.1.26431.109) — nearest in dotnet11 feed is 11.0.0-rc.2.26421.120
NU1603	sdk-tasks.Tests.csproj, msbuild.Integration.Tests.csproj, dotnet-format.*Tests.csproj, dotnet-watch-test-browser.csproj, and others	Same pattern repeated for each affected package across every test project in the solution

The same two error codes and package/version pair recur identically across all 10 build legs — this is a single root cause, not 10 separate issues.

---

_{🤖 Generated by the Build Failure Analysis workflow using (a href="(dev.azure.com/redacted) · commit 2c879eb}

🤖 Automated content by GitHub Copilot. Generated by the Build Failure Analysis workflow. · auto · 113.4 AIC · ⌖ 2.68 AIC · ⊞ 7.1K · [◷]( · ◷)

[dotnet-maestro]

Caution

🛑 Codeflow Paused — Conflict detected

A conflict was detected when trying to update this PR with changes from build 329840 of https://github.com/dotnet/dotnet/tree/f2b969981e123579eb8a779dc05aa8138569dff9.

💡 You can either merge the PR without getting these new updates or manually flow them in and resolve the conflicts so that automated codeflow can resume for this PR.

The conflicts in the following files need to be manually resolved:

• documentation/general/UpdateToNewTargetFramework.md
  🔍 View file in dotnet/sdk vs VMR
• src/Layout/redist/targets/GenerateBundledVersions.targets
  🔍 View file in dotnet/sdk vs VMR

ℹ️ To resolve the conflicts, please follow these steps:

1. Clone the current repository

   git clone https://github.com/dotnet/sdk
   cd sdk

2. Make sure your darc is up-to-date
   (version 1.1.0-beta.26451.2 or higher)

   # Linux / MacOS
   ./eng/common/darc-init.sh
   # or on Windows
   .\eng\common\darc-init.ps1

3. Run from repo's git clone and follow the instructions provided by the command to stage the conflict locally

   darc vmr resolve-conflict --subscription 94ba9a9b-a084-4c1e-bf44-d0c711c17773 

   This should apply the build 329840 with sources from f2b9699

4. Resolve the conflicts, commit & push the changes

5. Once pushed, the Codeflow verification check will turn green.
   If not, a new build might have flown into the PR and you might need to run the command above again.

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

VMR PRs included in this codeflow update:

• Add net12 known framework references dotnet#8542

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.