v18.9.6

What's Changed

• [vs18.6] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13793
• [vs18.0] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13859
• [vs18.6] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13858
• [vs18.7] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13863
• CsWin32 follow-up: CLR metadata + TypeLib interop migration by @JeremyKuhne in #13853
• Update vmr-sb-validation.yml for Azure Pipelines by @meghnave in #13871
• Test: keep shell alive 15s in ToolTaskCanChangeCanonicalErrorFormat (#13734) by @jankratochvilcz in #13878
• Add vs18.8 to merge-flow config by @OvesN in #13877
• Stable branding for 18.8 release by @OvesN in #13883
• Bump main to 18.9.0 after vs18.8 snap by @OvesN in #13880
• Avoid checkout in insertion pipeline by @rainersigwald in #13887
• Report actual launch path in MSB4216 for Runtime="NET" task host by @ViktorHofer in #13889
• Migrate Tlblmp and AxImp to Multithreaded Execution by @AlesProkop in #13708
• Replace ErrorUtilities assertion methods with Assumed API and BCL throw helpers by @DustinCampbell in #13790
• Fix CLR_E_SHIM_RUNTIMELOAD in RAR's IMetaDataDispenser activation by @JeremyKuhne in #13899
• [main] Update dependencies from nuget/nuget.client by @dotnet-maestro[bot] in #13905
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13907
• [main] Update dependencies from dotnet/roslyn by @dotnet-maestro[bot] in #13910
• [vs17.14] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13908
• [vs18.0] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13906
• Fix ToolTask output loss: increase EOF pipe timeout from 2s to 30s by @huulinhnguyen-dev in #13767
• Improve symlink cycle condition by @GangWang01 in #13901
• [vs18.6] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13904
• Add flaky-test detection and auto-fix agentic workflows by @ViktorHofer in #13915
• Quote --ignore-exit-code values so the quarantine pipeline does not shell-split on Unix by @ViktorHofer in #13918
• Fix flaky-test detector PR-evidence loss and raise scan limits by @ViktorHofer in #13919
• Tighten the pr review agent by @JanKrivanek in #13921
• Add environment variables for governance detection by @ViktorHofer in #13920
• Change IsPackable to true and add IsShipping flag by @ViktorHofer in #13924
• [vs18.7] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13911
• Make flaky detector verify recurrence postdates the fix before commenting by @ViktorHofer in #13930
• Fix AbsolutePath.GetCanonicalForm process state leak on Windows by @OvesN in #13788
• Fix flaky detector: unblock dnceng feed, fail fast, and defer quarantine to a second run by @ViktorHofer in #13936
• Update documentation for ImplicitUsings element by @drewnoakes in #13900
• [vs18.6] Point OptProf bootstrapper at rel/stable instead of int.main by @AlesProkop in #13923
• Add CS8618 suppressor for required MSBuild task properties by @AArnott in #13926
• Tighten NodeLaunchData.EnvironmentOverrides nullability to IDictionary<string, string?>? by @OvesN with @Copilot in #13815
• Fix ToolTask EOF wait to be STA-safe via CountdownEvent (MSB4018 in AspNetCompiler) by @YuliiaKovalova in #13917
• [automated] Merge branch 'vs18.6' => 'vs18.7' by @github-actions[bot] in #13941
• Localized file check-in by OneLocBuild Task: Build definition ID 9434: Build ID 14192258 by @dotnet-bot in #13849
• Bumping to 10.0.8 runtime packages by @OvesN in #13898
• Flaky-test workflow: reassure on empty PR list + drop local reproduction (quarantine-first) by @ViktorHofer in #13938
• [Flaky Test] Un-quarantine 5 consistently-green tests by @github-actions[bot] in #13952
• Flaky-test detector: open PRs ready-for-review; drop newly-filed-issues section from PR body by @ViktorHofer in #13958
• [Flaky Test] Quarantine 4 flaky tests by @github-actions[bot] in #13937
• Flaky-test: fix duplicate-issue bug by switching dedup key to a visible code-block key by @ViktorHofer in #13963
• CsWin32 follow-up: WindowsNative + VS Setup Configuration + remaining hand-rolled interop by @JeremyKuhne in #13872
• Add the reviewer release skill checking if the Learn article Change waves is updated by @GangWang01 in #13840
• [main] Source code updates from dotnet/dotnet by @dotnet-maestro[bot] in #13977
• [main] Update dependencies from dotnet/roslyn by @dotnet-maestro[bot] in #13987
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13983
• [Flaky Test] Un-quarantine 5 flaky tests confirmed green in quarantine pipeline by @github-actions[bot] in #13979
• [main] Update dependencies from nuget/nuget.client by @dotnet-maestro[bot] in #13982
• [vs17.14] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13985
• [vs18.0] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13984
• Localized file check-in by OneLocBuild Task: Build definition ID 9434: Build ID 14309196 by @dotnet-bot in #13957
• Add parentheses in capacity calculation by @jnyrup in #13980
• [vs18.6] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #13981
• Dedup target list in ProjectGraph.ExpandDefaultTargets to prevent graph explosion by @dfederm in #13855
• [vs18.7] Revert "Fix ToolTask hang when grandchild processes inherit pipe handles (#13351)" by @JanProvaznik in #13945
• chore: Pin GitHub Actions to commit SHAs by @pgoslatara in #13269
• [vs18.7] Fix OptProf bootstrapper channel: use 'release' not 'stable' by @JanProvaznik in #13993
• [vs18.6] Fix OptProf bootstrapper channel: use 'release' not 'stable' by @JanProvaznik in #13992
• Enabling weekly Dependabot updates for GitHub Actions by @rainersigwald with @Copilot in #13999
• [vs18.6] Fix OptProf bootstrapper channel: use 'int.stable' not 'release' by @JanProvaznik in #14005
• [vs18.7] Fix OptProf bootstrapper channel: use 'int.stable' not 'release' by @JanProvaznik in #14006
• Bump actions/download-artifact from 4 to 8 by @dependabot[bot] in #14000
• Bump actions/cache from 4 to 5 by @dependabot[bot] in #14001
• Bump actions/github-script from 7 to 9 by @dependabot[bot] in #14004
• Update release-checklist.md by @OvesN in #13754
• Bump and pin actions/checkout from 3.6.0 to v6.0.3 SHA by @dependabot[bot] in #14003
• Bump github/gh-aw-actions from 0.77.5 to 0.78.3 by @dependabot[bot] in #14002
• Source bootstrap dotnet-install script from a repo-local path by @JanProvaznik in #14011
• Raise un-quarantine bar to 50 distinct builds / 14 days by @ViktorHofer in #14009
• Replace Csc task with Roslyn API in FileTrackerTests by @huulinhnguyen-dev in #13094
• Introduce Copilot PAT rotation to agentic workflows by @JanKrivanek in #14013
• Fix Expert Code Review (on open) failing with git checkout error by @JanKrivanek in #14018
• CsWin32 follow-up: ComReference family + typelib registration interop by @JeremyKuhne in #13975
• Enable AOT/trim analyzers for Framework and StringTools by @JeremyKuhne in #14012
• Bump actions/checkout from 6.0.2 to 6.0.3 by @dependabot[bot] in #14021
• Enable AOT/trim analyzers for Utilities and Tasks by @JeremyKuhne in #14024
• Bump actions/upload-artifact from 4 to 7 by @dependabot[bot] in #14022
• Release checklist: read shipped version from VS rel/stable; stop pinging in template by @JanProvaznik in #14017
• Update CsWin32 to 0.3.287 and remove interop workarounds by @JeremyKuhne in #14046
• Fix invalid cache action pins in Skill Validation workflow by @rainersigwald with @Copilot in #14048
• Enablement of parallel project evaluation by @MichalPavlik in #12757
• Launch the MSBuild server process with Server GC by @JanProvaznik in #14043
• [main] Update dependencies from nuget/nuget.client by @dotnet-maestro[bot] in #14065
• [main] Update dependencies from dotnet/roslyn by @dotnet-maestro[bot] in #14066
• Move core ProjectReferenceTargets from Managed-only to Common targets by @dfederm in #13427
• Use direct NuGet.Frameworks reference on .NET Core by @rainersigwald in #14047
• Localized file check-in by OneLocBuild Task: Build definition ID 9434: Build ID 14390126 by @dotnet-bot in #14074
• [Flaky Test] Un-quarantine 2 consistently-green drive enumeration tests by @github-actions[bot] in #14076
• Expose import tree as MSBuildImportedProject items by @drewnoakes in #13681
• Add MSBuild Coordinator for fair-share node allocation by @DustinCampbell in #13653
• Improve MotW handling and clarify the MSB3821 by @JanKrivanek in #14015
• Localized file check-in by OneLocBuild Task: Build definition ID 9434: Build ID 14401593 by @dotnet-bot in #14080
• Package MT migration skill as a portable Copilot plugin + add MT migration reviewer agent by @jankratochvilcz in #14072
• Enable dotnet-msbuild plugin in settings by @ViktorHofer in #14083
• [Server] -mt implies MSBuild Server by @JanProvaznik in #13758
• Add mt-migration plugin to Copilot settings by @ViktorHofer in #14084
• MT reviewer: flag missing tests for substantive migrations by @jankratochvilcz in #14086
• [vs18.8] Replace ToolTask #13351 revert with STA-safe EOF fix (#13917) by @JanProvaznik in #14082
• [vs18.7] Replace ToolTask #13351 revert with STA-safe EOF fix (#13917) by @JanProvaznik in #14081
• Fix TerminalLogger auto-detection under MSBuild Server on Unix by @JanProvaznik in #14077
• Make IActivity.SetTag/SetTags return non-nullable IActivity by @DustinCampbell in #14091
• Make Runtime=NET task host handshake architecture-agnostic by @ViktorHofer in #13890
• Add MSBuild.Coordinator.exe.config files to VS layout by @DustinCampbell in #14101
• Default out-of-proc node pipe buffers to 1 MB (change wave 18.9) by @JanProvaznik in #14094
• Clean up Expander: split files, remove redundant type parameters, rename and restructure by @DustinCampbell in #14092
• Fix TaskParameterTaskItem.ToString() returning type name instead of item-spec by @huulinhnguyen-dev in #14095
• Disable Bootstrapper for vs17.14 by @AlesProkop in #14105
• [main] Update dependencies from nuget/nuget.client by @dotnet-maestro[bot] in #14124
• [main] Update dependencies from dotnet/roslyn by @dotnet-maestro[bot] in #14125
• Recognize C# record as a type in CreateCSharpManifestResourceName by @OvesN with @Copilot in #13870
• Bump actions/checkout from 6.0.3 to 7.0.0 by @dependabot[bot] in #14123
• Set vs.file.ngenPriority for MSBuild.Coordinator.exe on x64 by @DustinCampbell in #14117
• Introduce mode for project graph construction to load entire graph by @jeffkl in #13717
• Removes unneeded pipeline by @jankratochvilcz in #14129
• Add directory-scoped agent instructions for deprecated MSBuildTaskHost code by @rainersigwald with @Copilot in #14136
• Clean-up unnecessary compatibility polyfills and feature definitions. by @teo-tsirpanis in #12231
• Add MSBuild EventSource tracing documentation by @vitek-karas in #13961
• Fix DrainPacketQueue threads leaking by @Erarndt in #14135
• Add test pinning Returns capture before AfterTargets run by @rainersigwald in #14089
• Replace regex-based metadata expansion with manual scanning by @DustinCampbell in #14116
• [vs17.14] Redistribute net472 dotnet/runtime 10.0.8 servicing wave (Nrbf + HashCode 6.0) by @JanProvaznik in #14127
• Don't NGEN MSBuild.Coordinator.exe on x86 by @DustinCampbell in #14139
• Move ErrorUtilities_Tests to Assumed_Tests by @DustinCampbell in #14141
• Link Maestro flow wiki in release checklist step 5.5 by @OvesN in #14155
• Upgrade gh-aw to v0.79.8 and use copilot-pat-pool agentic environment by @jeffhandley in #14158
• Make property functions and reflection-heavy paths trim-compatible by @JeremyKuhne in #14079
• Add RequestThreadProc context to ETW events by @vitek-karas in #13978
• Bump actions/checkout from 6.0.3 to 7.0.0 by @dependabot[bot] in #14201
• Bump actions/cache/restore from 5.0.5 to 6.1.0 by @dependabot[bot] in #14200
• Bump github/gh-aw-actions/setup from 0.78.3 to 0.81.6 by @dependabot[bot] in #14199
• Bump actions/cache/save from 5.0.5 to 6.1.0 by @dependabot[bot] in #14198
• [Flaky Test] Quarantine 5 flaky tests (Windows-only) by @github-actions[bot] in #14197
• Fix NET task host MSB4216 handshake failure via child-side salt widening by @ViktorHofer in #14027
• Fix FindPublicMethodBySignature matching static methods for instance calls by @lewing in #14191
• ensure we build the analyzer in sourcebuild so downstream projects can use it by @baronfel in #14209
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #14204
• Stable branding for 18.9 release by @JanProvaznik in #14218
• [vs18.9] Serialize BuildRequestConfiguration.RequestedTargets to fix solution metaproject MSB4057 in parallel builds by @github-actions[bot] in #14227
• [vs18.0] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #14205
• [automated] Merge branch 'vs17.14' => 'vs18.0' by @github-actions[bot] in #14112
• [automated] Merge branch 'vs18.0' => 'vs18.6' by @github-actions[bot] in #14276
• [automated] Merge branch 'vs18.6' => 'vs18.7' by @github-actions[bot] in #14283
• [automated] Merge branch 'vs18.7' => 'vs18.8' by @github-actions[bot] in #14286
• [automated] Merge branch 'vs18.8' => 'vs18.9' by @github-actions[bot] in #14287
• [vs18.9] Source code updates from dotnet/dotnet by @dotnet-maestro[bot] in #14316
• [vs18.9] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #14448
• [vs18.9] Update dependencies from dotnet/arcade by @dotnet-maestro[bot] in #14529
• [vs18.9] Source code updates from dotnet/dotnet by @dotnet-maestro[bot] in #14515

New Contributors

• @meghnave made their first contribution in #13871
• @jnyrup made their first contribution in #13980
• @pgoslatara made their first contribution in #13269
• @lewing made their first contribution in #14191

Full Changelog: v18.8.2...v18.9.6