Issue
- After upgrading your computer to macOS Big Sur (11), your ESET product displays the following error message: "Your computer is not protected: System extension required for Web and Email Protection was not started because of error. Try to restart macOS or reinstall the product."
- Affected versions:
- ESET Endpoint Security for Mac version 6.10.456
- ESET Endpoint antivirus for Mac version 6.10.456
- ESET Cyber Security version 6.10.400
- ESET Cyber Security Pro version 6.10.400

Solution
Go to the Apple menu
and select System Preferences.
Click Network.
Select ESET Network Protection Proxy.
Click Connect.
