Originally Posted by cheeseburger763Hey cheeseburger763,
i try to open the game via steam and it comes up with this " STARTING GAME
there was a problem authenticating the ownership of this product please contact customer support in solving this problem"
I'm sorry to hear you've encountered this!
This message is caused when you're trying to sign in with a Ubisoft Account which is different to the account you originally launched / activated the game on.
Do you have any secondary Ubisoft accounts that you're aware of?
If you're unsure and need help locating your game activation, please contact us directly via our ... Read more