Active Directory server down or unreachable
Topic Last Modified: 2005-11-17
The Microsoft® Exchange Server Analyzer Tool uses remote procedure calls (RPCs) to read the CurrentVersion string value from the following registry key on the Active Directory® directory server:
On a computer running Microsoft Windows® 2000 Server, the expected value for the CurrentVersion string is 5.0. On a computer running Windows Server™ 2003, the expected value is 5.2.
If the Exchange Server Analyzer cannot read this registry value for any reason, an error is displayed.
Ensure that the directory server has been started and is connected to the network.
Use the PING command to determine if the directory server is reachable.
If there is a firewall in place, check to see if RPC ports are blocked.
Ensure that the Remote Registry service on the directory server has been started.
Check the permissions for the account under which the Exchange Server Analyzer is running to ensure that it has sufficient permissions to read the registry on the Active Directory server.
For more information about troubleshooting network connectivity problems, see the following:
Microsoft Knowledge Base article 325487, "How to troubleshoot network connectivity problems" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=325487)
"Microsoft Exchange Server Best Practices Analyzer Tool Troubleshooting Connectivity Problems" (http://go.microsoft.com/fwlink/?LinkId=56285)