In case the license was locked (either because of a license transfer or because of a manual license revoke on the Activation Server), the user has 3 options
•Free a license by making a license transfer on another computer (only possible if the license was locked because a license transfer was made on this computer)
•Try to activate again with the same Serial Number. This would only work if the license lock is removed on the Activation Server
•Activate with a new Serial Number