Fix Windows Update Service Not Starting Due to Permission Denied - Resolve 'Access Denied' When Searching External Drive in Windows-How to Resolve Windows Defender Dependency Errors
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.