How to find Plesk version?
Plesk version and microupdate information can be found on the Home page:
Log into Plesk;
Open Home tab. Under the System Overview section, there is panel version:
Since Plesk 12, the version also can be acquired by running the following in command-line interface:
# plesk version
Product version: Plesk Onyx 17.5.3 Update #35
Update date: 2017/12/19 06:25
Build date: 2017/03/17 16:00
OS version: Ubuntu 16.04
Wrapper version: 1.2
Note: The command is the same for Linux and Windows.