Event Type: Error
Event Source: DNS
Event Category: None
Event ID: 4015
Description: The DNS server has encountered a critical error from the Active Directory. Check that the Active Directory is functioning properly. The extended error debug information (which may be empty) is “”. The event data contains the error.
Just follow instructions from [ KB909249 ]
Download the Hotfix: WindowsServer2003-KB909249-x86-ENU
*Does not apply for Windows Server 2003 with Service Pack 2