The game didn’t install correctly. The game probably encountered some issues during the installation process.Without the necessary files being in optimal condition, your game won’t work.
This will allow the game to run on your system. You can either disable the anti-virus or make an exception for the game in the anti-virus.
Right-click on the game’ and select “Run The Game as Administrator.” If this doesn’t work for you, then try playing the game from the account that has the administrative rights. How To Fix Far Cry 6 Won’t Open Or Launch In Windows 10