Fix Windows Defender 504 Gateway Timeout & Permission Denied Errors - Fix Windows Security Service Error 0x80070422-Windows 11 Backup and Restore Setup Guide
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.
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