• Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
  • We plan to deprecate and remove the support for XML RPC protocol versions earlier than 1.6.9.1 in Plesk Obsidian 18.0.82. We strongly recommend that you update all existing integrations using earlier versions of the XML RPC protocol to comply with the version 1.6.9.1 specification.

Downgrade

Sorry,

There is absolutely no way to "downgrade", if you want to, then you may have to format your server and do a full installation of 9.5.

There is no way to instal 9.5 on top, since will not work either.

There is no way to do Control panel -> applications uninstall, since the new installer (version 10 uses different technology)
 
I can install plesk 9.5 on another server. I need a way to move the accounts from plesk 10 to plesk 9.5.
 
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