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Fix MongoDB Authentication Failed: Database Mismatch - How to Resolve Windows Defender Port Conflict via Registry-Troubleshooting systemd Service Restarting Repeatedly

2026-06-15 18:00:06developer-tools
Fix MongoDB Authentication Failed: Database Mismatch - How to Resolve Windows Defender Port Conflict via Registry-Troubleshooting systemd Service Restarting Repeatedly

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.