OneDrive Sync Update Errors: Troubleshooting Checklist - Windows 10 Outlook PST File Access Denied Troubleshooting-How to Fix Command Prompt Permission Denied (Administrator Fix)
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.