Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool queries the Microsoft Windows® Management Instrumentation (WMI) class to determine the value for the ServicePackMajorVersion key. The Exchange Server Analyzer also examines the following registry entry to determine the version of Windows that is running on the destination computer:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\CurrentVersion

If the Exchange Server Analyzer determines that the target system is running a Windows 2000 Server operating system but is not running the Update Rollup for Windows 2000 Server Service Pack 4, a warning is displayed.

As a best practice, it is recommended that you install the latest service packs and rollups for all software in the Exchange deployment.

To correct this warning
  1. Update all domain controllers and global catalog servers that are running Windows 2000 Server to the Update Rollup for Service Pack 4, plus the latest hotfixes and updates from Windows Update.

  2. Update all Exchange Server computers to the latest rollup and update rollup.

For more information about the Update Rollup for Windows 2000 SP4, see the Microsoft Knowledge Base article 891861, "Update Rollup 1 for Windows 2000 SP4" (

For more information about how to obtain and install Exchange Server service packs and rollups, see the Exchange Server Web site (