Using Windows 2000 Server Standard.
Clients use Windows XP.
I have a user who logs onto our domain succesfully, opens up his outlook e-mails which is connected to our exchange server succesfully. The user can connect to our SQL server through our ERP package succesfully and everything is fine.
Give it an hour or so and the user cannot log in to the SQL server, the exchange server or any of the shared folders on the network. It just prompts him to enter a username and password each time. When he enters his username and password it is not accepted and i have to get him to log out and then a have to unlock his account in Active Directory.
The user can then log back in to all his applications again.
Any ideas why Windows would keep automatically locking this user out?
Thanks in advance,