Fix Windows Defender Error 0x80073b01 - How to Resolve Invalid Configuration in Windows Activation-Fix Windows Defender SSL Certificate Error 0x80072f0d
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.