Fix Windows Defender Real-Time Protection Permission Denied - Firefox Secure Connection Failed: How to Fix-Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode

Updated 2026-07-28 17:35:11backup-recovery
Fix Windows Defender Real-Time Protection Permission Denied - Firefox Secure Connection Failed: How to Fix-Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.