MSExchange ADAccess 2389

  • 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

2389

Category

LDAP

Symbolic Name

DSC_EVENT_LDAP_TIMEOUT

Message Text

Process %1 (PID=%2). A request to Directory Server %3 did not return a result within %4 seconds and is being abandoned. The search will be retried if possible. The search that failed has the following characteristics: Base DN=%5, Filter=%6, Scope=%7.

Explanation

This Warning event indicates that a search request that was sent to the server that is running Active Directory did not provide a result within a reasonable time period. The search request was abandoned. This event is logged when the search request to the directory service did not return in less than 120 seconds.

The most frequent cause of this warning is because the domain controller is under heavy stress. This warning may also be caused if a network error is introduced at the packet level. This causes the domain controller to continuously try to resend the requested information to Microsoft Exchange.

User Action

If this event is seen rarely, it can be ignored. If this Warning event is logged at specific times or if any other pattern is detected, do the following:

  • Investigate what is occurring on the specific domain controller named in the Description section of the event and check to see whether it is being heavily loaded.

  • 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.

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.