: Windows "Core Isolation" or antivirus software (like Sophos) is blocking the driver from loading.
The error message often appears when users try to run network tools like GoodbyeDPI , ReQrypt , or custom VPN software. This usually happens because an older version of the driver is stuck in memory, or Windows is blocking the new installation due to security settings like Memory Integrity . Why the Error Persists After Restarting A standard reboot doesn't always clear the issue if: : Windows "Core Isolation" or antivirus software (like
Temporarily disable antivirus like Sophos or specialized firewalls. Ensure .sys and .dll files are in the program folder. Why the Error Persists After Restarting A standard
: An old WinDivert service is still registered but points to a file that no longer exists. If Windows says you need a restart, it’s
If Windows says you need a restart, it’s likely because it’s trying to overwrite a service that’s "marked for deletion." You can force this process using the command prompt: Open as an Administrator .
If the software still insists on a restart, you may need to clear the driver's registration manually: Open regedit (Registry Editor).