Domain Naming FSMO role not found

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at]  

Topic Last Modified: 2005-11-17

The Microsoft® Exchange Server Analyzer Tool queries the Active Directory® directory service to determine the fSMORoleOwner attribute of the domain naming operations master in the Configuration Naming Context. For example, in a domain called, fSMORoleOwner for the domain naming master is an attribute of CN=Partitions, CN=Configuration, DC=contoso, DC=com. The Exchange Server Analyzer then tries to open a Lightweight Directory Access Protocol (LDAP) connection with the domain controller. If the Exchange Server Analyzer finds that the domain controller specified in the fSMORoleOwner attribute does not respond, an error is displayed.

The domain naming master domain controller controls the addition or removal of domains in the forest. There can be only one domain naming master in the whole forest.

You must have a domain naming master defined for your Active Directory forest. Exchange Setup and Exchange Service Pack Setup will fail if a domain naming master domain controller is not online during set up. If the domain controller listed as the domain naming master is offline, it must be brought back online.

  1. Verify that the designated Active Directory server is physically present.

  2. If this directory server has been decommissioned, assign the role of domain naming master to another domain controller.

For more information about how to assign the role of domain naming master to another domain controller, see the following Microsoft Knowledge Base articles: