The license key can be taken from the Parallels key administrator system. If you do not have access to the key administrator system then generally, the PP license key is stored in the file /etc/psa/psa.key (for PP 8.x) or in /etc/sw/keys/keys/keyXXYYZZ (for PP 9.x and 10.x). The file can be transferred to the new server. A restart of the PP CP is required after the key’s replacement.
It is also possible to create a full PP backup, which will include PP data as well as the license key. Furthermore, you can use the
-license option during the backup restoration in order to restore the key.
Parallels Plesk Panel for Windows:
The PP license key is stored on the server in an encrypted state in the register. It is not possible to get the license key from the server.The backup/restore procedure can be accomplished via an easy-to-use GUI: Start > All Programs > Parallels > Plesk Backup/Plesk Restore (the “Backup up control panel configuration and server settings” option should be checked )