NSPI Proxy can contact Global Catalog %1 but it does not support the NSPI service. After a Domain Controller is promoted to a Global Catalog, the Global Catalog must be rebooted to support MAPI Clients. Reboot %2 as soon as possible.

Details
Product: Exchange
Event ID: 9176
Source: MSExchangeSA
Version: 8.0
Symbolic Name: evtNSPIProxyGCNotRebooted
Message: NSPI Proxy can contact Global Catalog %1 but it does not support the NSPI
service. After a Domain Controller is promoted to a Global Catalog, the
Global Catalog must be rebooted to support MAPI Clients. Reboot %2 as
soon as possible.
   
Explanation

This Error event indicates that the Microsoft 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 global catalog. 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 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, the global catalog must be restarted to support MAPI clients. To ensure that a global catalog responds to NSPI queries, restart the global catalog.

  • 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.

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.

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