Kill Running Plesk Installer in Linux


As you probably already know, Plesk can have only one instance of the Plesk Installer running at the same time. Trying to run a second copy will cause the following error:

BUSY: Update operation was locked by another update process.

In order to be able to run again Plesk Installer you will have to kill the process of the running version first.


  1. Make an SSH connection to your server
  2. Determine Plesk Installer processes PIDs using the following command:

ps aux | grep install | grep -v grep

  1. Kill the processes you found using:

kill -9 “process id”

  1. Remove the installer lock file located here:


  1. Run Plesk installer again:


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