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System Attendant: HTTP NSPI port is non-default

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at http://go.microsoft.com/fwlink/?linkid=34707.]  

Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool reads the following registry entry to determine whether HTTP Port is set to the default value:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeSA\Parameters\Rpc/HTTP NSPI Port

If the Exchange Server Analyzer finds that the value for Rpc/HTTP NSPI Port is not 6004 (decimal), a non-default configuration message is displayed.

The Rpc/HTTP NSPI Port registry key is set to 6004 by Exchange Server 2003 Setup. The Rpc/HTTP NSPI Port registry key is used to support RPC over HTTP functionality for Microsoft Office Outlook® 2003.

Unless you have customized your RPC over HTTP deployment with the aid of Microsoft Consulting Services or by recommendation from Microsoft Product Support Services, it is recommended that you deploy RPC over HTTP with the default port values.

importantImportant:
This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore the registry if a problem occurs. For information about how to restore the registry, view the "Restore the Registry" Help topic in Regedit.exe or Regedt32.exe.

  1. Open a registry editor, such as Regedit.exe or Regedt32.exe.

  2. Navigate to: HKLM\System\CurrentControlSet\Services\MSExchangeSA\Parameters

  3. Double-click the Rpc/HTTP NSPI Port key, and set the Value data field to 6004 (decimal).

  4. Close the registry editor.

  5. Restart the computer for this setting to take effect.

Before you edit the registry, and for information about how to edit the registry, see the Microsoft Knowledge Base article 256986, "Description of the Microsoft Windows Registry" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=256986).

For more information about configuring RPC over HTTP, see the following Knowledge Base articles:

 
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