Article ID: 842121 - View products that this article applies to.
When you use System Monitor to view performance objects on a Microsoft Exchange Server 2003 computer that is in a clustered environment, the counters for the MSExchangeDSAccess service may not be available or may display performance data that is not correct.
This problem may occur when the active node in the cluster experiences a failover. Because of the registry checkpoint process, the following subkey is overwritten on the passive node in the Exchange server cluster:
The MSExchangeDSAccess entry values must remain unique for each computer.
To resolve this problem, obtain the latest service pack for Microsoft Exchange Sever 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/836993/ )How to obtain the latest service packs for Exchange Server 2003
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was corrected in Exchange Server 2003 Service Pack 1 (SP1).