Search results

[Unhandled Exception]: System.ArgumentNullException: Parameter "projectFile" cannot be null.

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

Status: Open.

Bug

#13150 In dotnet/msbuild;

· ViktorHofer opened on Jan 29, 2026

-mt pack does not work on dotnet/arcade repository

Status: Open.

Bug

#13140 In dotnet/msbuild;

· JanProvaznik opened on Jan 29, 2026

Release 18.4

Status: Open.

#13132 In dotnet/msbuild;

· YuliiaKovalova opened on Jan 28, 2026

Add warm build scenarios to PerfStar.

Area: PerfStarIssues related to our PerfStar tool. That measures MSBuild performance.Issues related to our PerfStar tool. That measures MSBuild performance.

Status: Open.

#13126 In dotnet/msbuild;

· AR-May opened on Jan 27, 2026

Add a CI job that does a 2 stage build of msbuild, the second stage with bootstrapped -mt mode

Status: Open.

Feature

#13123 In dotnet/msbuild;

· JanProvaznik opened on Jan 27, 2026

Path validation strings in AbsolutePath should be localized

Area: Localization

Status: Open.

#13114 In dotnet/msbuild;

· JanProvaznik opened on Jan 26, 2026

Multithreaded build for roslyn crashes in TerminalLogger

Status: Open.

Bug

#13095 In dotnet/msbuild;

· JanProvaznik opened on Jan 23, 2026

Reevaluate System.Resources.Extensions pkgdef

Area: Visual StudioIssues related to interactions with Visual Studio or project systems.Issues related to interactions with Visual Studio or project systems.

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

triaged

Status: Open.

#13090 In dotnet/msbuild;

· rainersigwald opened on Jan 22, 2026

Use Microsoft.IO.Redist in FileUtilities on net472 instead of custom methods

backlog

help wantedIssues that the core team doesn't plan to work on, but would accept a PR for. Comment to claim.Issues that the core team doesn't plan to work on, but would accept a PR for. Comment to claim.

triaged

Status: Open.

#13078 In dotnet/msbuild;

· JanProvaznik opened on Jan 21, 2026

sdk task migration - remainder

Status: Open.

#13073 In dotnet/msbuild;

· SimaTian opened on Jan 20, 2026

Manual testing: Verify COM support on custom task via experimental WebTools insertion

Status: Open.

#13071 In dotnet/msbuild;

· YuliiaKovalova opened on Jan 20, 2026

Release 18.3

triaged

Status: Open.

#13064 In dotnet/msbuild;

· ViktorHofer opened on Jan 20, 2026