[Known Build Error] StreamJsonRpc.ConnectionLostException

[jjonescz]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1544930
Build error leg or test failing: Microsoft.CodeAnalysis.LanguageServer.UnitTests.ProtocolConversionsTests.ProjectToProjectContext_MiscellaneousFilesWorkspace(mutatingLspWorkspace: False)
Pull request: #84692

Error Message

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

{
  "ErrorMessage": "StreamJsonRpc.ConnectionLostException",
  "BuildRetry": true,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1544930
Error message validated: [StreamJsonRpc.ConnectionLostException]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 8/10/2026 11:14:52 AM UTC

Report

Build	Repository	Test	Pull Request
1566198	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.ThinClientKilled_ServerExits(useNamedPipe: False)	#84701
1565422	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1564354	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.DaemonServerLifecycleTests.StaleDaemon_NextClientLaunchesFreshDaemon	#85001
1563150	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1562962	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1562802	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1561921	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1561859	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1560154	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.DaemonServerLifecycleTests.OneEditorKilled_OnlyThatClientTornDown	#84944
1558682	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.ThinClientKilled_ServerExits(useNamedPipe: False)	#84701
1558460	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.RequestOrdering.RequestOrderingTests.FailingMutableTaskShutsDownQueue	#84944
1557933	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.FileBasedPrograms.FileBasedProgramsWorkspaceTests.TestDiagnosticsRequestedAfterDocumentClosed	#84944
1557852	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1558042	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive	#84946
1557960	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive
1557710	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1557699	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1557603	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1557574	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1557676	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1557570	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1557536	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: False)	#84937
1557495	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: False)	#84591
1557490	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.Metadata.LspMetadataAsSourceWorkspaceTests.TestMetadataFile_OpenClosed(mutatingLspWorkspace: False)	#84738
1557327	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1557267	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive	#84934
1557194	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1557120	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive	#84860
1557055	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1556880	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)
1556828	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1556514	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1556392	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive	#84884
1556280	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1555927	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: False)	#84917
1555923	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownRequestReturnsMethodNotFoundAndServerStaysAlive(useNamedPipe: True)	#84888
1555924	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.Workspaces.LspWorkspaceManagerTests.TestLspHasClosedDocumentChangesAsync(mutatingLspWorkspace: False)	#84916
1555658	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive	#84916
1555158	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.DaemonServerLifecycleTests.StaleDaemon_NextClientLaunchesFreshDaemon	#84736
1554602	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.ProtocolConversionsTests.ProjectToProjectContext_MiscellaneousFilesWorkspace(mutatingLspWorkspace: True)	#84871
1554565	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.SingleServerLifecycleTests.UnknownNotificationKeepsServerAlive(useNamedPipe: True)
1554282	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.Rename.PrepareRenameTests.TestPrepareRenameValidLocationAsync(mutatingLspWorkspace: True)	#84701
1552873	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.ProcessHost.UnitTests.DaemonServerLifecycleTests.StaleDaemon_NextClientLaunchesFreshDaemon
1551352	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.Definitions.GoToTypeDefinitionTests.TestGotoTypeDefinitionAsync_WithLocalSymbol(mutatingLspWorkspace: False)	#84871
1551334	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.LanguageServerDaemonTests.Daemon_SecondConcurrentConnection_IsIsolatedFromDaemonAndFirstClient
1549874	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.Workspaces.SourceGeneratedDocumentTests.TestReturnsErrorForRemovedClosedGeneratedFile(mutatingLspWorkspace: True)	#84725
1549080	dotnet/roslyn	workitem_6.WorkItemExecution	#84701
1549157	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.Commands.ExecuteWorkspaceCommandTests.TestExecuteWorkspaceCommand(mutatingLspWorkspace: True)	#84765
1547351	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.Workspaces.LspWorkspaceManagerTests.TestForksWithDifferentGeneratedContentsAsync(mutatingLspWorkspace: False)
1544930	dotnet/roslyn	Microsoft.CodeAnalysis.LanguageServer.UnitTests.ProtocolConversionsTests.ProjectToProjectContext_MiscellaneousFilesWorkspace(mutatingLspWorkspace: False)	#84692

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
2	31	50

[dibarbet]

@jjonescz not sure the procedure here, but I think this issue should be closed as I believe I've fixed all the issues causing this exception in LSP tests.

[jjonescz]

It would be auto-closed by a bot if there are no hits in a while. But yeah we can also close and I'll let you know if I see it reappear in main. Thanks!