When the game starts, ensure you create an offline save. This removes the requirement for a validated serial key tied to a defunct Atari account.
Official manual activation was traditionally handled through SecuROM Support portals, though many players now use community-developed tools like 80_PA for "fake activation" to play without official server pings. Test Drive Unlimited 2 Unlock Code And Serial Number
If you hit an activation limit, you must contact the support team of your original point of purchase. Online Play in 2026: When the game starts, ensure you create an offline save