MonitorWare Knowledge Base

In my site found error on the PDC as below(windows 2K adv svr),How can i fix it?

Source: SAM
Category: None
Event ID: 16645
Description: The maximum account identifier allocated to this domain controller has been assigned. The domain controller has failed to obtain a new identifier pool. A possible reason for this is that the domain controller has been unable to contact the master domain controller. Account creation on this controller will fail until a new pool has been allocated. There may be network or connectivity problems in the domain, or the master domain controller may be offline or missing from the domain. Verify that the master domain controller is running and connected to the domain.

Thanks in advance
Wks,.

Please take a look to the following article: http://support.microsoft.com/?kbid=325700

Hope this helps.