Topic Last Modified: 2010-01-25

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:

From the Operations Console, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.
From the Operations Console, double-click this alert, and then click the Alert Context tab. Review the logged events that meet the criteria of this Operations Manager alert.

Details

Product Name	Exchange
Product Version	14.0 (Exchange 2010)
Event ID	2116
Event Source	MSExchange ADAccess
Alert Type	Warning
Rule Path	Microsoft Exchange Server/Exchange 2010/Common Components/Active Directory Access
Rule Name	The domain controller isn't running Windows Server 2003 Service Pack 1 or later.

Explanation

This Warning event indicates that the domain controller specified in the event description isn't running Windows Server 2003 Service Pack 1 (SP1) or later. This event may also occur when one or more of the following conditions are true:

The Microsoft Exchange Active Directory Topology service is unable to read the serverName attribute on the RootDSE.
The Microsoft Exchange Active Directory Topology service is unable to read the serverReference attribute from the Active Directory configuration naming context.
The Lightweight Directory Access Protocol (LDAP) query of the Active Directory domain naming context for the operatingSystem and operatingSystemServicePack attributes failed. These attributes are missing or corrupted.

Note:
You will see Unknown Operating System and Unknown Service Pack in the event description when one or more of the conditions explained here are true.

For more information about RootDSE attributes, see RootDSE at the MSDN Web site.

The domain controller specified in the event description will not be used. As long as other domain controllers are available, mail flow won't be interrupted. However, we recommend that the issue be investigated and fixed as soon as possible.

User Action

To resolve this warning, do one or more of the following:

Upgrade the domain controller specified in the event description to Windows Server 2003 SP1 or a later version of Windows.
If you see Unknown Operating System and Unknown Service Pack in the event description, do one or more of the following:
- Make sure that the account you are logged in as has Read permissions on the RootDSE.
- Check network connectivity to the domain controller specified in the event description. For more information, see Microsoft Knowledge Base article 325487, How to troubleshoot network connectivity problems.
- Run the Dcdiag command-line tool to test domain controller health. To do this, run dcdiag /s:<Domain Controller Name> at a command prompt on the Exchange server. Use the output of Dcdiag to discover the root cause of any failures or warnings that it reports. For more information, see Dcdiag Overview at the Windows Server TechCenter.

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.