Topic Last Modified: 2006-07-14

The Microsoft® Exchange Server Analyzer Tool examines the Exchange Function Call Log (FCL), Store.fcl file, for events that indicate a predominance of ongoing cross-component calls from the Microsoft Exchange Information Store service (Store.exe) to the Active Directory® directory service.

Ongoing calls are requests from the Microsoft Exchange Information Store service (Store.exe) to other components that have not received a response at the time the Exchange FCL data is written to the Store.fcl file.

Active Directory provides all mailbox information, address list services, and other recipient-related information. Most Exchange Server 2003 configuration information is also stored in Active Directory.

Exchange Server services access information that is stored in Active Directory and writes information to Active Directory.

If the Exchange Server Analyzer finds events in the Store.fcl logging file that reflect a predominance of calls from the Microsoft Exchange Information Store service (Store.exe) to Active Directory, the Exchange Server Analyzer displays an error.

When cross-component calls from the Microsoft Exchange Information Store service (Store.exe) wait for a response, remote procedure call (RPC) threads can back up behind these requests and lead to Exchange Server performance issues such as delays in server responses to clients.

Ongoing calls from the Microsoft Exchange Information Store service to Active Directory can be caused by the following conditions:

To resolve this error, take the following steps:

For More Information

For more information about Exchange performance and DSAccess, see Microsoft Knowledge Base article 250570, "Directory service server detection and DSAccess usage" (http://go.microsoft.com/fwlink/?LinkId=3052&kbid=250570).

For more information about Exchange Server performance, see the "Performance and Scalability Guide for Exchange Server 2003" (http://go.microsoft.com/fwlink/?LinkId=47576).

For more information about how to troubleshoot Exchange Server performance issues, see "Troubleshooting Microsoft Exchange Server Performance" (http://go.microsoft.com/fwlink/?LinkId=47588).

For more information about how to troubleshoot information store performance, see Microsoft Knowledge Base article 257725, "XADM: How to Collect Diagnostic Data for Information Store Troubleshooting" (http://go.microsoft.com/fwlink/?LinkId=3052&kbid=257725).

For more information about Domain Controller performance, see the following Windows Server resources: