You may need to have a root access to the main server where the PLESK have been installed.

Please type the command below to show your current password.

[root@centos ]# /usr/local/psa/bin/admin –show-password
sKyMI8DrPa6B

Below is the command to reset the ‘admin’ user password.

[root@centos ]# /usr/local/psa/bin//init_conf -u -passwd