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Thank you I will try this on Monday and update this question.
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Thank you I will try this on Monday and update this question.

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Thanks for your help. &nbsp;Sorry it took so long. &nbsp;I wasn;t scheduled to visit this client.
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Thanks for your help.  Sorry it took so long.  I wasn;t scheduled to visit this client.

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This error message is appearing repeatedly in the DNS Event log:<br />
<br />
The DNS server was unable to open zone _msdcs.NATIONAL.local in the Active Directory from the application directory partition ForestDnsZones.NATIONAL.lo<wbr />cal. This DNS server is configured to obtain and use information from the directory for this zone and is unable to load the zone without it. Check that the Active Directory is functioning properly and reload the zone. The event data is the error code.<br />
<br />
What do I need to do to resolve this issue.
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This error message is appearing repeatedly in the DNS Event log:

The DNS server was unable to open zone _msdcs.NATIONAL.local in the Active Directory from the application directory partition ForestDnsZones.NATIONAL.local. This DNS server is configured to obtain and use information from the directory for this zone and is unable to load the zone without it. Check that the Active Directory is functioning properly and reload the zone. The event data is the error code.

What do I need to do to resolve this issue.

DNS Issue in Windows Server 2003

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.

Windows Networking

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.