Our office is networked with a domain using a Windows Server 2003 machine. Everyone in the office can access the files and the SQL Server on the server fine except for one computer. Every time this client comes in in the morning they login fine to the domain with their username and password but they can't access their server. Pining the server results in time outs. Opening mapped drives fails and connecting to the SQL Server 2005 on the server fails. The weird things is that if someone goes to the server and logs in at the actual server box, their computer magically starts to work. They can see everything on the server. Does anyone know why this would occur?

have you checked the software firewalls on both the server and the workstation? if someone logs in at the server and things work that usually indicates something related to logon is starting a needed service. Review your event viewer logs

I believe the client does have McAfee installed on their computer which I know can always be the source of many problems. I will check to see if turning that off fixes things. What kind of service would be started at logon that would only effect one work station?? Thanks