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GitHub Actions Runner Not Connecting: Fixes That Work - Fix Firefox SSL Error After Browser Update-Proxy Settings Causing 504 in Windows Terminal

Updated 2026-06-13 17:40:01browser-issues
GitHub Actions Runner Not Connecting: Fixes That Work - Fix Firefox SSL Error After Browser Update-Proxy Settings Causing 504 in Windows Terminal
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.