Unsupported OSes
Plesk does not accept support requests and will not issue software patches for servers with OSes that are not listed in the table above, or if their Vendor Termination Date is past due.
Support Specifics
Plesk does not accept technical support requests for preview versions of Plesk. Bug reports and technical questions for preview versions should be submitted through the Plesk Community Forum. Feature requests should be submitted through the Plesk User Voice.
For older unsupported versions of Plesk servers, Plesk strives to assist and accept technical support requests, but only the ones related to upgrading to a supported version or environment. Exceptions are updates from and to preview versions, since the stability of such upgrades is not guaranteed.
Migration Assistance
If a user’s Plesk version is approaching its End of Life phase or the OS is approaching its Vendor Termination Date, Plesk recommends migrating to the latest Plesk version and a supported operating system. If a user needs migration instructions, advice, or if the user would prefer to let Plesk professionals handle the migration, the user should contact the Plesk Professional Services team.