If you launch a Ubisoft game through Steam while logged into the wrong Ubisoft account, you may receive "There was a problem authenticating the ownership of this product" error message.

This error can be caused by the following factors:

• When a game or additional content purchased through Steam is linked to a different Ubisoft account and you are logged into a Ubisoft Connect with the wrong account.
• If you are launching the game from the correct Ubisoft Account, but the additional content (DLC) was redeemed on another Ubisoft Account.
• If you are trying to access the game through Steam Family Share, this game may not be compatible.

In order to troubleshoot this, here are a few steps you can try:

1. Delete cache files in Steam[ubi.li] and Ubisoft Connect[ubi.li]

2. Perform a full reinstall of Ubisoft Connect[ubi.li]

Should you still encounter the error message after completing the steps, we would like to ask you to get through our teams via our Support website[ubi.li].Whilst doing so, in order to speed up the process, please consider attaching the following information to the case:

• Screenshot showing the proof of purchase[ubi.li] for the game and any DLC from Steam.

• Your unique Steam ID number[ubi.li], this usually can be found on your Steam Account/Profile settings page.

• Ubisoft Connect launcher log file[ubi.li]


Once the case is submitted, our teams will verify all information and get back to you as soon as possible.