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Couldn't discover the Active Directory topology in a timely manner.

 

Topic Last Modified: 2011-08-02

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.

 

Product Name

Exchange

Product Version

14.0 (Exchange 2010)

Event ID

2139

Event Source

MSExchange ADAccess

Alert Type

Error

Rule Path

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

Rule Name

Couldn't discover the Active Directory topology in a timely manner.

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

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.

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.

 
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