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Document potential breaking changes in multithreaded mode.

triaged

Status: Open.

#12906 In dotnet/msbuild;

· AR-May opened on Dec 9, 2025

·  

.NET 10

Document the new "Runtime" metadata in UsingTask

Area: DocumentationIssues about docs, including errors and areas we should extend (this repo and learn.microsoft.com)Issues about docs, including errors and areas we should extend (this repo and learn.microsoft.com)

Status: Open.

Task

#12905 In dotnet/msbuild;

· ViktorHofer opened on Dec 9, 2025

Enable .NET TaskHost usage for Project types that do not import the base .NET SDK-delivered MSBuild SDK

Area: EngineIssues impacting the core execution of targets and tasks.Issues impacting the core execution of targets and tasks.

Area: TaskHost

backlog

Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

triaged

Status: Open.

Feature

#12895 In dotnet/msbuild;

· baronfel opened on Dec 8, 2025

Make a way for Target authors to easily clean up unused/intermediate Items after Target invocation

Area: EngineIssues impacting the core execution of targets and tasks.Issues impacting the core execution of targets and tasks.

Area: LanguageIssues impacting the MSBuild programming language.Issues impacting the MSBuild programming language.

Area: Performance

backlog

triaged

Status: Open.

Feature

#12894 In dotnet/msbuild;

· baronfel opened on Dec 8, 2025

Honor BuildInParallel

Status: Open.

#12899 In dotnet/msbuild;

· vindicatorr opened on Dec 6, 2025

[BuildCheck Suggestion]: Batching Copy task invocations

Area: BuildCheck

backlog

BuildCheck SuggestionSuggestion for a built in MSBuild analyzer. Label should be applied together with 'Area: BuildCheck'Suggestion for a built in MSBuild analyzer. Label should be applied together with 'Area: BuildCheck'

triaged

Status: Open.

Feature

#12884 In dotnet/msbuild;

· rainersigwald opened on Dec 5, 2025

Target up-to-date checks should support content-based checks, not just timestamp-based

Area: EngineIssues impacting the core execution of targets and tasks.Issues impacting the core execution of targets and tasks.

Area: Incremental BuildIssues that affect incremental build scenarioIssues that affect incremental build scenario

backlog

triaged

Status: Open.

Feature

#12883 In dotnet/msbuild;

· baronfel opened on Dec 5, 2025

[Performance]: Task Telemetry

Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

triaged

Status: Open.

Bug

#12882 In dotnet/msbuild;

· SimaTian opened on Dec 5, 2025

WPF template project does not build with -mt

Area: TasksIssues impacting the tasks shipped in Microsoft.Build.Tasks.Core.dll.Issues impacting the tasks shipped in Microsoft.Build.Tasks.Core.dll.

triaged

Status: Open.

#12881 In dotnet/msbuild;

· JanProvaznik opened on Dec 5, 2025

When chaining item functions and comparing the result to empty string, the comparison will return false incorrectly.

Status: Open.

Bug

#12877 In dotnet/msbuild;

· ericstj opened on Dec 5, 2025

[dnceng-bot] Branch <code>msbuild/exp/raines/publish-via-template-where-possible</code> can't be mirrored to Azdo fast forward branch

Status: Open.

#12870 In dotnet/msbuild;

· dotnet-maestro-bot opened on Dec 3, 2025

-mt Concurrency issue

Priority:2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

triaged

Status: Open.

Bug

#12867 In dotnet/msbuild;

· SimaTian opened on Dec 3, 2025