How to Allow an App Through Windows Defender Firewall - How to Open Windows Security When It Won't Start-Windows Security Failed to Load Permissions: Fix Guide

Updated 2026-06-13 16:22:25security-tools
How to Allow an App Through Windows Defender Firewall - How to Open Windows Security When It Won't Start-Windows Security Failed to Load Permissions: Fix Guide
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.