System.Net.Security.Tests are failing on CI #135031

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1619585
Build error leg or test failing: System.Net.Security.Tests.SslStreamStreamToStreamTest_MemoryAsync.SslStream_StreamToStream_Authentication_IncorrectServerName_Fail
Pull request: https://github.com/dotnet/runtime.git/pull/134898

Error Message

{
  "ErrorMessage": [
    "SslStream_StreamToStream_Authentication_IncorrectServerName_Fail [FAIL]",
    "Assert.Throws() Failure: No exception was thrown",
    "Expected: typeof(System.Security.Authentication.AuthenticationException)"
  ],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1619585
Error message validated: [Assert.Throws() Failure: No exception was thrown Expected: typeof(System.Security.Authentication.AuthenticationException)]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 10/1/2026 5:11:48 PM UTC

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Summary