Topic Last Modified: 2010-05-03

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:


Product Name


Product Version

14.0 (Exchange 2010)

Event ID


Event Source


Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Mailbox/System Attendant

Rule Name

Name Service Provider Interface (NSPI) Proxy can contact the global catalog, but it does not support the NSPI service.


This Error event indicates that the Exchange server was able to contact a server that is designated to be a global catalog server but did not get a response from the Name Service Provider Interface (NSPI) on that server. This can occur because the NSPI is not advertised by the global catalog server, possibly because the domain controller was changed to a global catalog server and was not restarted.

User Action

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

  • After a domain controller is changed to a global catalog server, the global catalog server must be restarted to support MAPI clients. To make sure that a global catalog server responds to NSPI queries, restart the global catalog server.

  • Make sure the TCP/IP NetBIOS Helper service is started. If the TCP/IP NetBIOS Helper service is not started, start the service and make sure the Startup Type is set to Automatic.

  • If you are having difficulty resolving the issue, contact Microsoft Product Support. For information about contacting support, visit the Contact Us page of the Microsoft Help and Support Web site.

For More Information

If you are not already doing so, consider running the Exchange tools 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, improve mail flow, and better manage disaster recovery scenarios. 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.