Question

An extension was installed automatically to Plesk, why that had happened?
How to disable automatic extensions installation or block a particular one?

Answer

This is a result of our extension catalog improvement: no need to manually install extensions anymore when the license has been purchased with some specific functionality included to it. An extension with a purchased license is installed automatically.

For example, if you purchased "Docker Remote Management" corresponding Docker extension will be installed automatically. Or if the Plesk license includes DNSSEC, the extension will be also installed automatically.

To control this behavior and disable automatic extensions installation, the following can be added into panel.ini on :

CONFIG_TEXT: [ext-catalog]
extensionAutoInstall = false

To disable a specific extension add it to blacklist:

CONFIG_TEXT: [extensions]
blacklist = docker

Note: "Panel.ini Editor" extension can be used to edit the file from Plesk UI