MSExchange ADAccess 2139

  • 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

2139

Category

Topology

Symbolic Name

DSC_EVENT_TOPO_INITIALIZATION_TIMEOUT

Message Text

Process %1 (PID=%2). Active Directory topology could not be discovered in {0} seconds. Review the Application log for related Warning or Error events. Use the Ping or PathPing command-line tools to test network connectivity to local domain controllers. Run the Dcdiag command line tool to test domain controller health.

Explanation

This Error event indicates that the Active Directory provider could not establish an LDAP connection to any domain controller or global catalog server in the domain within 60 seconds. This event may be logged for the following reasons:

  • Network connectivity issues

  • RPC communication issues

  • Domain controller or global catalog servers not operational

User Action

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

  • Use the Ping or PathPing command-line tools to test basic connectivity. Use Ping to isolate network hardware problems and incompatible configurations. Use PathPing to detect packet loss over multiple-hop trips. For more information, see Microsoft Knowledge Base article 325487, Advanced network adapter troubleshooting for Windows workstations.

  • 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.

  • Review the Application log for related Warning events and Error events. These related events may provide more information about the root cause of this error. For example, if MSExchangeADAccess Event ID 2152 is logged, there may be RPC communications issues.

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.