Topic Last Modified: 2010-04-27

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager monitors the Windows Application log on computers running Exchange 2010 and generates this alert when the events specified in the following Details table are logged.

To learn more about this alert, in Operations Manager, do one or more of the following:


Product Name


Product Version

14.0 (Exchange 2010)

Event ID


Event Source


Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Mailbox/System Attendant

Rule Name

The Address List service could not find the address list root.


This Error event indicates that the Address List Service (formerly known as the Recipient Update Service) could not find the Address List Root object (addressBookRoots attribute of the MicrosoftExchange object in Active Directory). This could be because the Address List Service is unable to communicate with a domain controller or global catalog that is no longer available, has been demoted, or has invalid configuration information.

User Action

To resolve this error, restart the domain controller.

For More Information

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.