• Article

An exception occurred while attempting to locate a Client Access server to handle the request

 

Topic Last Modified: 2007-11-16

The Microsoft Exchange Server 2007 Management Pack for Operations Manager monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.

To learn more about this alert, if you are using Microsoft Operations Manager 2005, do one or more of the following:

  • From the Operator Console, select this alert, and then click the Properties tab. Review the description of the alert that includes the variables specific to your environment.

  • From the Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description. Review the events that have been logged that meet the criteria of this Operations Manager alert.

To learn more about this alert, if you are using System Center Operations Manager 2007, 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 events that have been logged that meet the criteria of this Operations Manager alert.

Details

Product Name

Exchange

Product Version

8.0 (Exchange Server 2007)

Event ID

4018

Event Source

MSExchange Availability

Alert Type

Warning

MOM Rule Path

Microsoft Exchange Server/Exchange 2007/Client Access/Information Worker

MOM Rule Name

An exception occurred while attempting to locate a Client Access server to handle the request.

Explanation

This Error event indicates that a failure occurred while locating Microsoft Exchange Server that runs the Client Access server role that is required to retrieve Schedule+ Free Busy information for the e-mail address specified in the event description. This event may occur for multiple reasons.

Note   This event occurs when the diagnostic logging level of Availability Service is set to Low. For more information about how to change diagnostic logging levels, see Changing Process Logging Levels.

User Action

For more information about the root cause of this error, do one or more of the following:

  • Increase the diagnostic logging level on the Availability Service and Availability Service General counter of the MSExchange Availability performance object. You can increase logging by running the following Exchange Management Shell commands:

    Set-EventLogLevel "MSExchange Availability\Availability Service" -Level High

    Set-EventLogLevel "MSExchange Availability\Availability Service General" -Level High

    For more information about increasing diagnostic logging levels, see How to Change Logging Levels for Exchange Processes.

  • Review the Application event log for related events. Events that occur immediately before and after this event may provide more information about the root cause of this error.

Important After you have completed troubleshooting this issue, return logging to the default level by running the following commands:

Set-EventLogLevel "MSExchange Availability\\Availability Service" -Level Lowest

Set-EventLogLevel "MSExchange Availability\\Availability Service General" -Level Lowest
  • If this event seems to be causing mail flow interruptions or other problems in the Exchange environment, contact Microsoft Product Support. For information about how to contact support, visit the Microsoft Help and Support Web site.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

For More Information

To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.

To review Exchange 2007 event message articles that may not be represented by Exchange 2007 alerts, see the Events and Errors Message Center.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.