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Fix 'Connection Refused' Error on localhost in CMD - Fix PowerShell 502 Bad Gateway with Curl-Windows Terminal Auth Token Error Troubleshooting

Updated 2026-06-15 08:01:46developer-tools
Fix 'Connection Refused' Error on localhost in CMD - Fix PowerShell 502 Bad Gateway with Curl-Windows Terminal Auth Token Error Troubleshooting
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.