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Fix Windows Defender Invalid Configuration Error - Fix Outlook Network Error Permission Denied-Antivirus Interference with Firefox HTTPS: Fix Guide

2026-06-17 15:36:14browser-issues
Fix Windows Defender Invalid Configuration Error - Fix Outlook Network Error Permission Denied-Antivirus Interference with Firefox HTTPS: 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.