zhizhu
Home / office-tools / Fix Firefox Secure Connection Failed Due to Antivirus Interference - How to Resolve Windows Defender Port Already Allocated on Windows 10-pip SSL Certificate Error Fix Guide

Fix Firefox Secure Connection Failed Due to Antivirus Interference - How to Resolve Windows Defender Port Already Allocated on Windows 10-pip SSL Certificate Error Fix Guide

2026-06-13 13:07:32office-tools
Fix Firefox Secure Connection Failed Due to Antivirus Interference - How to Resolve Windows Defender Port Already Allocated on Windows 10-pip SSL Certificate Error Fix Guide

Final checklist

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