I have a Windows XP workstation that is a member of a domain. I am mapping a drive to a Server 2008 R2 machine that is a member of that same domain. I have stored the credentials in the mapped drive settings. I have retried this a few times and know for sure that I have the correct credentials. When I reboot the machine, the first time I attempt to connect to the mapped drive it pops up a dialogue box that states and unknown account or incorrect password is stored. If I enter the same password as is stored and make no changes to the account info (domain\username) I can connect and use the drive throughout the day with no problem. Once I reboot, I have the same issue again. I have verified the DNS server settings on the workstation are correct. Just starting to look into this now, but figured I'd post here as a head start.