Windows Security App Not Opening on Windows 10: Fixes That Work - How to Fix Python venv Permission Denied on Activate-Stop Windows Explorer Crashing in Windows 11
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.