Occasionally due to updates or system configuration, anti-virus programs have been known to interfere with Steam and Football Manager.
Because of this, we recommend if you encounter issues, setting up your anti-virus to make sure it is not conflicting with the game. Please add Steam and Football Manager to your exceptions. How to do this will depend on your anti-virus, we very much suggest you searching online on the programs website for details on how to do this.
For clarification by