MSExchange ADAccess 2116

  • Article

 

This article provides an explanation and possible resolutions for a specific Exchange event. If you don't find what you’re looking for here, try searching Exchange 2010 Help.

Details

Product Name

Exchange

Product Version

14.0

Event ID

2116

Category

Topology

Symbolic Name

DSC_EVENT_BAD_OS_VERSION

Message Text

Process %1 (PID=%2). The domain controller %3 is running Windows %4 %5. Exchange Active Directory Provider requires that domain controllers are running Windows Server 2003 Service Pack 1 or later versions of Windows.

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, which have been 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 and improve mail flow. 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.