#Authentication #ubisoft #steam Hey guys! This video shows one of the many ways to fix the errors that may occur when trying to launch an Ubisoft game via Steam. If this video did not help with your issue I recommend trying to contact Ubisoft support. OR Going into Ubisoft Connect, your Account, then unlinking and relinking your Steam. There are many different causes to this authentication issue and confusion. Some are user based, some are because of updates, etc..