[test-quarantine] Quarantine HubConnectionTests.RefreshChangingUserIdentifierClosesConnection - #68151
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…ection Quarantines RefreshChangingUserIdentifierClosesConnection due to intermittent 403 Forbidden failures on LongPolling transport teardown observed across 11 CI builds on main over the past 30 days. Associated issue: #aw_refreshuser Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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August 1, 2026 11:01
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Quarantines
Microsoft.AspNetCore.SignalR.Client.FunctionalTests.HubConnectionTests.RefreshChangingUserIdentifierClosesConnectiondue to intermittent 403 Forbidden failures on LongPolling transport teardown observed across 11 CI builds onmainover the past 30 days.Failure Summary
The test verifies that changing the SignalR
UserIdentifiervia authentication refresh closes the hub connection. When the LongPolling transport tears down the connection (via DELETE request), the server correctly returns 403 Forbidden because the session is already closed — but this causesVerifyNoErrorsScope.Dispose()to throw, failing the test.Failed 11 times over the past 30 days. Most recent failing build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1533724&view=results
Observed in builds: 1533724, 1532072, 1531676, 1530173, and 7 more.
Associated issue: #68149