If you experience problems with Plesk, for example, malfunctioning of a
service, you can try to resolve them by restarting Plesk or the
administrative web server sw-cp-server. Also, a restart is necessary
to apply configuration changes that cannot be made while Plesk is
running.
To restart Plesk, run the following command:
/etc/init.d/psa restart
To restart sw-cp-server, run the following command:
/etc/init.d/sw-cp-server restart
with