Here is the breakdown regarding the "serial number" feature for the PC version:
Right-click the game shortcut and select "Run as Administrator." This often allows the game to "save" the activation status to your registry. nfs shift 2 serial number pc
Using unauthorized or "grey market" keys can lead to the permanent suspension of a user's digital library. Legitimate Recovery Methods Here is the breakdown regarding the "serial number"
NFS Shift 2 Unleashed has a strictly enforced (typically 5 machines). Locating your CD key in Steam | Ubisoft Help You must enter this code during installation or