To upgrade 8.x or 9.x versions of Plesk to the latest version via the web interface, follow the instructions given below.
Important:
1. Plesk Sitebuilder 4.5 is not upgraded. Alternatively, the new version of Presence Builder (former Sitebuilder) installs beside the previous one. Hence, you have the opportunity to manage existing sites in Sitebuilder 4.5 and create sites either in Web Presence Builder or in Sitebuilder 4.5. The upgrade of existing sites to the new format is performed manually.
2. If you used Plesk Billing, add the Customer & Business Manager component to the list of components to upgrade.
To upgrade Plesk from the Web interface:
chmod +x plesk-installer
On a Linux/Unix server:
./plesk-installer --web-interface
On a Windows server:
plesk-installer.exe
(Only for Linux) Open your browser and enter https://your-host-name-or-IP-address:8447/ in the address bar. The Plesk Installer Web interface opens.
(Only for Windows) Plesk Installer wizard opens in a new browser window. When the installer starts, an additional console window opens. This window displays the operations performed by the utility. It is closed upon the successful installation, or after 30 minutes of inactivity.
Note: As described in the section Before Upgrading Plesk, you can select a Plesk build for an upgrade depending on its release tier. By default, Installer shows you only the latest general and late adopter releases. To be able to upgrade to other Plesk releases, use the following Installer options:
--all-versions
to view all available Plesk versions.
--tier <release_tier>
to view the latest available versions with the specified release tier.
The packages will be downloaded and installed. When the upgrade is finished, you will see a notification saying "All products and components have been successfully installed and upgraded." Click OK.
If you upgrade Plesk with Business Manager, the components require some time (not more than five minutes) to set up integration after the upgrade is completed. During this period, you may not see Business Manager links in Plesk, Business Manager may require your password to log in, and you may see a message about invalid credentials when logging in.
If you want to force the integration, log in to Business Manager and reconnect Plesk manually. To do this, go to Home, group Sync Statistics, click the corresponding link, select Plesk ID, and click Reconnect.