Fix Windows Defender Offline Scan Not Working on Windows 10 - Beginner's Guide to Fixing Microsoft Store 504 Timeout-How to Resolve Checksum Errors in WinRAR
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.