[release/10.0.4xx] Source code updates from dotnet/msbuild

[dotnet-maestro]

Note

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

This pull request brings the following source code changes

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

• Subscription: 3fc72f68-f3a5-475b-b146-83ca4219fdb3
• Build: 20260708.7 (321972)
• Date Produced: July 8, 2026 3:23:55 PM UTC
• Commit: 98ad673ed2e5cea39a90fac739da4eb2338f3f44
• Commit Diff: a81b435...98ad673
• Branch: vs18.9

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/dotnet/msbuild:98ad673ed2e5cea39a90fac739da4eb2338f3f44..https://github.com/dotnet/dotnet:darc-release/10.0.4xx-01d4c534-3043-4413-94cc-8d2950cff886

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• [vs18.6] Update dependencies from dotnet/arcade msbuild#13793
• [vs18.0] Update dependencies from dotnet/arcade msbuild#13859
• [vs18.6] Update dependencies from dotnet/arcade msbuild#13858
• [vs18.7] Update dependencies from dotnet/arcade msbuild#13863
• [vs18.8] Stable branding for 18.8 release msbuild#13884
• [vs17.14] Update dependencies from dotnet/arcade msbuild#13908
• [vs18.0] Update dependencies from dotnet/arcade msbuild#13906
• [vs18.6] Update dependencies from dotnet/arcade msbuild#13904
• [vs18.7] Update dependencies from dotnet/arcade msbuild#13911
• [vs18.6] Point OptProf bootstrapper at rel/stable instead of int.main msbuild#13923
• [automated] Merge branch 'vs18.6' => 'vs18.7' msbuild#13941
• [vs17.14] Update dependencies from dotnet/arcade msbuild#13985
• [vs18.0] Update dependencies from dotnet/arcade msbuild#13984
• [vs18.6] Update dependencies from dotnet/arcade msbuild#13981
• [vs18.7] Revert "Fix ToolTask hang when grandchild processes inherit pipe handles (#13351)" msbuild#13945
• [vs18.8] Revert "Fix ToolTask hang when grandchild processes inherit pipe handles (#13351)" msbuild#13946
• [vs18.7] Fix OptProf bootstrapper channel: use 'release' not 'stable' msbuild#13993
• [vs18.6] Fix OptProf bootstrapper channel: use 'release' not 'stable' msbuild#13992
• [vs18.6] Fix OptProf bootstrapper channel: use 'int.stable' not 'release' msbuild#14005
• [vs18.7] Fix OptProf bootstrapper channel: use 'int.stable' not 'release' msbuild#14006
• [vs18.8] Replace ToolTask #13351 revert with STA-safe EOF fix (#13917) msbuild#14082
• [vs18.7] Replace ToolTask #13351 revert with STA-safe EOF fix (#13917) msbuild#14081
• Disable Bootstrapper for vs17.14 msbuild#14105
• [vs17.14] Redistribute net472 dotnet/runtime 10.0.8 servicing wave (Nrbf + HashCode 6.0) msbuild#14127
• [vs18.0] Update dependencies from dotnet/arcade msbuild#14205
• [automated] Merge branch 'vs17.14' => 'vs18.0' msbuild#14112
• [automated] Merge branch 'vs18.0' => 'vs18.6' msbuild#14276
• [automated] Merge branch 'vs18.6' => 'vs18.7' msbuild#14283
• [automated] Merge branch 'vs18.7' => 'vs18.8' msbuild#14286
• [automated] Merge branch 'vs18.8' => 'vs18.9' msbuild#14287

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

[dotnet-maestro]

This pull request only contains source updates from https://github.com/dotnet/msbuild between commits a81b4352504b9e097b512a9d615e8c56d013f595 and 98ad673ed2e5cea39a90fac739da4eb2338f3f44.