Fix 'Access Denied' Error in Windows Update on Windows 10 - Troubleshooting Chrome Profile Update and Sync Issues-Resolve Locked Activation File on Windows 10
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.