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Create a document that tracks the assembly versions for assemblies loaded in various MSBuild Hosts

Area: DebuggabilityIssues impacting the diagnosability of builds, including logging and clearer error messages.Issues impacting the diagnosability of builds, including logging and clearer error messages.

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.

Feature

#13499 In dotnet/msbuild;

· baronfel opened on Apr 7, 2026

Migrate GetReferenceAssemblyPaths to TaskEnvironment API

Status: Open.

#13494 In dotnet/msbuild;

· OvesN opened on Apr 7, 2026

Incorrect sizing in SdkResult equality check.

Status: Open.

Bug

#13490 In dotnet/msbuild;

· rainersigwald opened on Apr 6, 2026

MSBuild ITaskItem/TaskItem should be able to report an IElementLocation or similar to aid diagnostics

Area: DebuggabilityIssues impacting the diagnosability of builds, including logging and clearer error messages.Issues impacting the diagnosability of builds, including logging and clearer error messages.

backlog

needs-designRequires discussion with the dev team before attempting a fix.Requires discussion with the dev team before attempting a fix.

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

triaged

User Experience

Status: Open.

Feature

#13487 In dotnet/msbuild;

· baronfel opened on Apr 3, 2026

MSBuild .up2date files can permanently hork U2D check in VS

needs-designRequires discussion with the dev team before attempting a fix.Requires discussion with the dev team before attempting a fix.

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

triaged

Status: Open.

Bug

#13478 In dotnet/msbuild;

· AArnott opened on Apr 1, 2026

GetCopyToOutputDirectoryItemsDependsOn overwrites previous value instead of appending to it

Status: Open.

#13471 In dotnet/msbuild;

· snechaev opened on Mar 31, 2026

[ADO] Excessive msbuild.exe tasks when loading a solution

Area: Solution (.sln)Issues related to parsing .sln files or building solutionsIssues related to parsing .sln files or building solutions

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

triaged

Status: Open.

#13470 In dotnet/msbuild;

· MichalPavlik opened on Mar 31, 2026

MSBuild Release Checklist 18.6

Status: Open.

#13468 In dotnet/msbuild;

· MichalPavlik opened on Mar 31, 2026

MsBuild using last write time of symlinks instead of their targets to determine whether or not to rebuild

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

triaged

Status: Open.

Bug

#13465 In dotnet/msbuild;

· DiegoBaldassarMilleuno opened on Mar 30, 2026

Reënable Apphost for worker nodes

.NET Core

Area: NetSDK

Area: Performance

Partner:NuGet

Priority:1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship without

triaged

Status: Open.

#13464 In dotnet/msbuild;

· rainersigwald opened on Mar 30, 2026

Copy Task on macOS Copy-on-Write filesystems is not resilient to concurrent copies

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.

Bug

#13463 In dotnet/msbuild;

· baronfel opened on Mar 30, 2026

Consider building a 'bare' directory

Area: ApplicationIssues with `msbuild.exe` or the CLI experience.Issues with `msbuild.exe` or the CLI experience.

needs-designRequires discussion with the dev team before attempting a fix.Requires discussion with the dev team before attempting a fix.

Status: Open.

Feature

#13456 In dotnet/msbuild;

· baronfel opened on Mar 27, 2026