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Restart the Plesk panel when the interface does not load

caution rootPleskdebian, ubuntu

Caution: This command changes the system. Understand what it does before you run it.

root@server
systemctl restart sw-engine sw-cp-server

Restarts the panel’s PHP engine (sw-engine) and its web server (sw-cp-server). Helps when the Plesk interface does not load, shows a 502 error or responds extremely slowly. Customer websites and mail are not affected.

Note: If the panel remains unreachable, look for the cause with systemctl status sw-cp-server sw-engine and in panel.log.

Also searched as

  • plesk panel not reachable
  • port 8443 not loading
  • plesk interface hangs

Related one-liners

All in Plesk

Check the status of the Plesk core services

#systemctl status sw-engine sw-cp-server psa --no-pager
harmlessPlesk

Back up a single domain with Plesk tools

#plesk bin pleskbackup --domains-name example.com --output-file=/root/backup-example.com.tar
cautionPlesk

Change the password of a Plesk mailbox

#plesk bin mail --update info@example.com -passwd 'NewSecurePassword'
cautionPlesk

Change the PHP version of a domain from the command line

#plesk bin domain --update example.com -php_handler_id plesk-php83-fpm
cautionPlesk

Check if Plesk is listening on ports 8443 and 8880

#ss -tlnp | grep -E ':(8443|8880)\b'
harmlessPlesk

Check the mail configuration in Plesk without changes

#plesk repair mail -n
harmlessPlesk

Read first, then run.

The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

  • All commands are provided without warranty and are not tested on every system.
  • Understand what a command does before running it, and check every placeholder.
  • Make a backup first and, if possible, try it on a test system.
  • You run commands at your own risk. Liability for damages is excluded to the extent permitted by law.