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Fixing NGINX 502 Bad Gateway Permission Denied - Fix systemd Service Restart Loop on Linux-Windows Defender Real-Time Protection Not Responding

2026-06-13 13:47:37macos-help
Fixing NGINX 502 Bad Gateway Permission Denied - Fix systemd Service Restart Loop on Linux-Windows Defender Real-Time Protection Not Responding

Final checklist

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