Plesk Updates – Overview

In Plesk, you can manage updates of the following components:

• Plesk packages and service packages built by Plesk. The latter include
  all Plesk extensions, Kaspersky Anti-Virus, Plesk Premium Antivirus, and so on.

  See Updating Plesk Manually via the User Interface below and
  also Updating Plesk Manually via the Command Line.

• (Plesk for Linux) Operating system packages. You can manage their
  updates and notifications about the updates in Plesk if the
  System Updates tool is turned on.

  See Updating System and Third-Party Components Manually below.

• (Plesk for Linux) Third-party components shipped with Plesk, such as
  MySQL, PHP, web servers, various mail services, and so on. These
  components can be updated as part of either system updates or Plesk
  updates if you have enabled automatic updating of third-party
  components.

  Note: Use automatic updates of third-party components with care.
  Websites hosted on your server might be incompatible with newer
  versions of certain components. The System Updates
  tool allows you to lock selected packages so that no updates will
  be applied to them. This is why automatic updates of third-party
  components are turned off by default.

  To enable automatic updates for third-party components, go to Tools
  & Settings > Update Settings and select
  “Automatically install updates for third-party components shipped by Plesk”.

This table shows which Plesk tool can be used for updating various
software components.

*Exceptions: an update delivered by Plesk Installer will contain
third-party service package updates if these updates are required by
dependency for a Plesk package update. Especially if a Plesk update
resolves critical security or stability issues.