Topic Last Modified: 2010-02-15

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

MSExchange ADAccess

Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Common Components/Active Directory Access

Rule Name

Couldn't connect to domain controller. It won't be used by ADAccess. Check for connectivity to the domain controller and that DNS is configured correctly.


This Warning event indicates that the Microsoft Exchange Active Directory Provider could not connect to the domain controller specified in the event description. This event may occur if one or both of the following conditions are true:

  • The host record that maps the Fully Qualified Domain Name (FQDN) of the specified domain controller to its IP address is missing or contains an incorrect address.

  • The specified domain controller is not working or not reachable on the network.

User Action

To resolve this warning, perform the following steps:

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.