Fix Remote Desktop Version Mismatch (RDP 8.0) - How to Fix KMS Activation Error 0xC004F074 in a Domain-How to Enable Windows Security on a Mac Running Windows
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.