Good Day, I get the series of these errors on Exchange server 2003. Windows cannot query for the list of Group Policy objects. Check the event log for possible messages previously logged by the policy engine that describes the reason for this.

This is actually a Windows question. http://social.technet.microsoft.com/Forums/en-US/winserverGP/thread/b93653c4-270b-4373-a030-c18a150a5bca I would ask any questions about this in the Windows Group Policy Forums: http://social.technet.microsoft.com/Forums/en-US/winserverGP/threads