I have a customer with a Win2k3 server functioning as the DC for a small domain with AD and XP pro workstations. A most peculiar problem keeps cropping up intermittently. At least once a week, access to shares on the server from the workstations stops. We have devised a workaround which consists of simply restarting the server. The most consistent aspect of this problem is that one workstation will ALWAYS lose access if a Word document on the server is left open for several hours. Then if the user tries to save it, he receives a "You may not have permission to access this file" message. In all cases, access to the email service on the server continues to work. I checked DHCP and the leases are all for eight days. Event Viewer is completely uninformative: no failures except an occasional random W32time sync failure. There are only four workstations, so it can't be a licensing issue. Two questions:
1) What could be causing this problem?
2) Is there a way to automate a periodic reboot of the server as a hand-off workaround, assuming that takes care of all symptoms?
Thanks for the help.