You should update a client/server software or run a program that needs some files exclusively. But some users are still connected. How do you find out which users? ProcessSearch checks the network based on IP-List and/or range for any running process. It shows you IP and Name of the computers, where the process searched for is running. Take care: Doesn't work on computers with firewalls and needs RPC activated.
||Free to try
||Windows 2000/XP/2003 Server, RPC