Articles in this section

• Upgrade Guide to Plesk Obsidian
• How to upgrade Plesk to the next release
• How to install an SSL certificate for a domain in Plesk (Let's Encrypt / other certificate authorities)
• Upgrade to Obsidian fails: The installation of the package 'plesk-locale-base-en-US' failed with code -1
• Pre-upgrade warning message: There are 2 mail accounts with passwords encrypted using a deprecated algorithm. These users will be able to log in to mail server with PLAIN authentication mechanism, but they will lose the ability to log in to Plesk
• Unable to download Plesk Installer to the Windows Server Core or via CLI
• Plesk is unavailable after upgrade from Onyx to Obsidian: mailmng-imap failed: Error: invalid command --features
• Plesk Obsidian RTM is not available for upgrade on the Updates and Upgrades page
• Upgrade Guide to Plesk Onyx
• Unable to upgrade Plesk Onyx to Plesk Obsidian: ailed to solve dependencies: plesk-mail-pc-driver-18.0-2.centos.7+p18.0.18.1+t190909.1738.x86_64 requires postfix >= 2:3.4.5