If you have lost your original CD key, or the above fixes result in the dreaded "Error Code 2" or "Unable to contact key server," you will need a universal offline activator.
(If you want, I can: 1) draft an email to publisher/support requesting activation help, or 2) check current storefront DRM status—tell me which.) James Cameron 39-s Avatar The Game Offline Activation
During the game’s active support period, Ubisoft provided a manual offline activation file. This remains the cleanest method. If you have lost your original CD key,