Where can we find the plesk key file (file containing the key)?

Get the Key number/files from shell:

1. Parallels Panel 7.x – 8.x:
# grep ‘Key number’ /etc/psa/psa.key

2. Parallels Panel 9.x:
grep ‘key-number’ /etc/sw/keys/keys/key*

Plesk for Windows:

1. In Plesk control panel go to Server, License Management and see the license number there.
2. Use the command in the command prompt:
“%plesk_bin%\keymng.exe” –get-key-number

key file on plesk windows is in:

C:\Program Files (x86)\Parallels\Plesk\admin\repository\keys\keyxxxxxx

when you change it , you have to delete C:\Program Files (x86)\Parallels\Plesk\admin\repository\registry.xml and it will be recreated after first accessing plesk interface.