Denuvo drivers often refuse to load if they detect the system security environment is compromised or if "Secure Boot" is disabled in the BIOS.
Denuvo is a common anti-piracy software designed to protect games during their early release windows. When it fails to start in Football Manager 2018, it is often due to the security system on your PC blocking the driver's execution or a conflict with other kernel-level drivers. Effective Solutions for FM 2018 football manager 2018 failed to start denuvo driver