Recommended updates for Windows 2000 Server SP 4 on a cluster

[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]  

Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool reads the following registry entry to determine the version of the Microsoft Windows® operating system that is running on the Exchange server:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion

A CurrentVersion value of 4.0 indicates the computer is running Microsoft Windows NT® Server 4.0. A value of 5.0 indicates the computer is running Microsoft Windows 2000 Server. A value of 5.2 indicates the computer is running Microsoft Windows Server™ 2003.

The Exchange Server Analyzer also queries the Win32_OperatingSystem Windows Management Instrumentation (WMI) class to determine the value of the ServicePackMajorVersion key.

Finally, the Exchange Server Analyzer queries the Win32_Service WMI class to determine whether the ClusSvc service is started.

The Exchange Server Analyzer displays a best practice configuration message if the following conditions exist:

  • The Exchange server is on a computer running Windows 2000 Server that has been upgraded with Service Pack 4.

  • The ClusSvc service is started.

It is recommended that you evaluate the updates and hotfixes that are available and determine whether they might resolve problems in your environment.

For more information and for the list of updates that are available for servers running Windows 2000 Server, see the Microsoft Knowledge Base article 895090, "Recommended hotfixes for Windows 2000 Service Pack 4-based server clusters" (