I need close the catia applicaion at all client workstation during the license update process. At the time of the update, I need to prevent the use of the catia application. I also need to close catia applcation before going to do license update .
I would use pskill. This is included in the System Internals Suite.
From here you can specify a list of computers and kill the process remotely. Then use psexec to restart it in a similar manner after the upgrade.