System.TimeoutException in System.Net.Security.Tests.TlsSessionTests.SocketBoundSession_RequestClientCertificate_DrivesSecondHandshakeToCompletion

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1602623 Build error leg or test failing: System.Net.Security.Tests.TlsSessionTests.SocketBoundSession_RequestClientCertificate_DrivesSecondHandshakeToCompletion

Error Message

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

{
  "ErrorMessage": "System.TimeoutException : The operation has timed out",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: :mag_right: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1602623 Error message validated: [System.TimeoutException : The operation has timed out] Result validation: :white_check_mark: Known issue matched with the provided build. Validation performed at: 9/18/2026 8:28:50 PM UTC