[Known Build Error] System.Threading.Tasks.TaskCanceledException

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1547946 Build error leg or test failing: Microsoft.CodeAnalysis.LanguageServer.UnitTests.HandlerTests.NonMutatingHandlerExceptionNFWIsReported(mutatingLspWorkspace: False) Pull request: https://github.com/dotnet/roslyn/pull/84725

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "System.Threading.Tasks.TaskCanceledException",
  "BuildRetry": true,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: :mag_right: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1547946 Error message validated: [System.Threading.Tasks.TaskCanceledException] Result validation: :white_check_mark: Known issue matched with the provided build. Validation performed at: 8/11/2026 10:11:33 AM UTC

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Summary