RESOLUTION This can be done using the following commands when logged in as root via SSH on the Plesk server: Linux Plesk versions: # /etc/rc.d/init.d/psa stopall # /etc/rc.d/init.d/psa start FreeBSD Plesk, versions prior 8.1: # /usr/local/psa/rc.d/psa stop # /usr/local/psa/rc.d/psa start FreeBSD Plesk since 8.1 version: # /usr/local/etc/rc.d/psa.sh stop # /usr/local/etc/rc.d/psa.sh start