I started the game this morning, and a message box popped up saying “Sorry, something went wrong, for solutions please visit:” and a link to codefusion site. I followed the instructions to obtain a validation key. I followed the instructions, copied the request, pasted the response, clicked next and yet still the game didn’t launch.
I tried restarting the computer, verifying files in Steam, disabling my firewall, etc. and nothing helped. It seems this error has been reported in the past, but I have found no answers. Hitman status shows all green, I am confused. It seems that my account is the only one on Steam Family Sharing that cannot access the game.