MSExchange ADAccess 2133

Thank you for clicking the link that brought you to this page. We do not currently have an article to resolve this specific issue. Your attempt to get to this event article helps us prioritize the event articles for which we will be providing detailed explanations and user actions.

Although there is as yet no supplementary content specifically written to help resolve this Exchange 2010 event, here are some recommended next steps to learn more about this alert:

• Review the Application log and System log on your Exchange 2010 servers for related events. For example, events that occur immediately before and after this event may provide more information about the root cause of this error.

• Research your issue by using self-support options. From the navigation pane of the Exchange Server Solutions Center page, click Self Support Options to use the following and other self-help options:

  • Search the Microsoft Knowledge Base. For example, search the Knowledge Base for the Event Source and event ID you are getting, as well as any other key words in the text of the event message.

  • Search the Exchange 2010 Forum. You can also post a question there.

  • Search the Exchange Server Community Web site.

• Research your issue by using other resources. From the navigation pane at the Exchange Server Solutions Center page, click Key Resources to learn about other resources.

• Resolve your issue by using assisted support options. From the Exchange Server Solutions Center page, click Assisted Support Options to contact a Microsoft support professional. Because your organization may have a specific procedure for directly contacting Microsoft Technical Support, be sure to reviewing your organization's guidelines first. If you do contact support, have the event ID information available. Also, if possible, be prepared to send your application and system logs to the support professional.

Details

Explanation

This Warning event indicates that a Lightweight Directory Access Protocol (LDAP) query to an Active Directory server took more than 15 seconds to finish. The parameters that are used to build the LDAP query are specified in the event description. This event may occur when one or both of the following conditions are true:

• Intermittent network issues exist when trying to connect to the Active Directory server.

• The Active Directory server is too busy to respond to this LDAP query.

User Action

No user action is required if this warning occurs during a known network outage. However, if this warning frequently occurs together with other Error events or Warning events that also indicate a failure to connect to the Active Directory server, follow these steps:

• 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.

Note   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.