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Fix Windows Update Connection Refused Due to Firewall - Windows Security DNS Error Troubleshooting Guide-How to Fix SSL Certificate Error 0x80072f0d in Windows Defender

2026-06-13 13:44:49windows-fixes
Fix Windows Update Connection Refused Due to Firewall - Windows Security DNS Error Troubleshooting Guide-How to Fix SSL Certificate Error 0x80072f0d in Windows Defender

Final checklist

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