[release/11.0.1xx-preview1] 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: 3bc6047d-8fec-49d1-ac72-4aea056f5b78
• Build: 20260128.4 (299116)
• Date Produced: January 28, 2026 12:55:03 PM UTC
• Commit: 6b7a28c6dc8c2bd1236656144ecdc964c1dc8064
• Commit Diff: b795233...6b7a28c
• Branch: main

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/dotnet/msbuild:6b7a28c6dc8c2bd1236656144ecdc964c1dc8064..https://github.com/dotnet/dotnet:darc-release/11.0.1xx-preview1-c79f1688-7590-4ef8-b51c-f125c631c884

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Localized file check-in by OneLocBuild Task: Build definition ID 9434: Build ID 13167444 msbuild#13117
• Reduce allocations in ProjectItemInstance.CommonConstructor by settin… msbuild#12978
• Change version check from != to < to allow loading newer assembly versions when older versions are requested. msbuild#12909

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

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• absolutizing "" should be an error msbuild#13120

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

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Refactor Microsoft.IO usage msbuild#13062

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