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Fix Windows Update 502 Bad Gateway Due to DNS Configuration - How to Stop Firefox Freezing on Windows 10-Certbot Renewal Configuration Troubleshooting

2026-06-13 16:04:41office-tools
Fix Windows Update 502 Bad Gateway Due to DNS Configuration - How to Stop Firefox Freezing on Windows 10-Certbot Renewal Configuration Troubleshooting

Final checklist

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