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Fix Windows Defender DNS Error After Update - How to Fix 502 Bad Gateway Certificate Errors in PowerShell-Windows 10 Command Prompt DNS Error Troubleshooting

2026-06-18 01:52:12cloud-software
Fix Windows Defender DNS Error After Update - How to Fix 502 Bad Gateway Certificate Errors in PowerShell-Windows 10 Command Prompt DNS Error 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.