[ci-scan] Test failure: GC/Regressions/Github/Runtime_129681 fails with coreclr_initialize 0x80004005 on osx x64

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Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1545348
Build error leg or test failing: coreclr Pri1 Runtime Tests Run osx x64 checked — GC/Regressions/Github/Runtime_129681/Runtime_129681

Pipeline: runtime-coreclr outerloop (definition 108), branch main. The failure reproduces on both osx.15.amd64 machines behind the plain osx x64 checked leg (jobs e2334af3 / 1132d4aa) in source build 1545348 and persists into follow-up build 1545482 (job 31e71870).

This is a distinct failure mode from the Crossgen2 exit-255 signature tracked by #132037 on the R2R_CG2 osx x64 leg: here the plain (non-R2R) osx x64 leg runs the same test but the runtime host aborts during startup with coreclr_initialize failed - Error: 0x80004005. The Crossgen2 failed with exitcode: 255 line from #132037 does not appear in this log.

Error Details

Running test: GC/Regressions/Github/Runtime_129681/Runtime_129681/Runtime_129681.cmd
External disassembler is not available.
BEGIN: coreclr_initialize failed - Error: 0x80004005
END: coreclr_initialize failed - Error: 0x80004005

Return code:      1
...
Expected: 100
Actual: 255
END EXECUTION - FAILED
Test Harness Exitcode is : 1

Error Message

{
  "ErrorMessage": [
    "Running test: GC/Regressions/Github/Runtime_129681/Runtime_129681/Runtime_129681.cmd",
    "BEGIN: coreclr_initialize failed - Error: 0x80004005"
  ],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

First build it occurred

Observed in source build 1545348 (2026-08-08) on both osx x64 machines and again in follow-up build 1545482 (2026-08-08) — at least two distinct builds.

Duplicate search

Searched open and closed issues/KBEs for Runtime_129681, coreclr_initialize failed, and 0x80004005: the only existing test-specific KBE is #132037, which matches a different signature (Crossgen2 failed with exitcode: 255) on the R2R_CG2 leg and does not match this plain-leg startup failure. Related: #132037. No open or merged PR references this signature.

---

Filed by ci-failure-scan (detection only). ci-failure-fix walks open [ci-scan] KBEs and either opens a small fix PR or comments here to loop in owners — it never disables the test.

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Generated by CI Outer-Loop Failure Scanner · 719.9 AIC · ⌖ 16.6 AIC · ⊞ 18.3K · ◷

Report

Build	Repository	Test	Pull Request
1545672	dotnet/runtime	GC/Regressions/Github/Runtime_129681/Runtime_129681/Runtime_129681.cmd
1545609	dotnet/runtime	GC/Regressions/Github/Runtime_129681/Runtime_129681/Runtime_129681.cmd

Summary

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