Topic Last Modified: 2005-11-17

The Microsoft® Exchange Server Analyzer Tool queries the Win32_OperatingSystem Microsoft Windows® Management Instrumentation (WMI) class to determine the value of the Version key.

The Exchange Server Analyzer also examines the following registry entry to determine the version of Windows that is running on the computer:

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

A CurrentVersion value of 5.0 indicates the computer is running a Microsoft Windows 2000 Server operating system. The Version value for the release version of all Windows 2000 Server operating systems is 5.0.2195. Any other value for the Version key indicates a pre-release version of Windows 2000 Server is being used.

If the Exchange Server Analyzer finds the value for the second instance of CurrentVersion to be 5.0, and the value of Version does not equal 5.0.2195, an error is displayed.

Unless you are part of a Technology Adoption Program (TAP) or similar Microsoft-sponsored program, Microsoft does not support or recommend using pre-release software in production environments.

To correct this error

  1. Upgrade all Exchange infrastructure servers, including domain controllers, global catalog servers, Active Directory Connector (ADC) servers, and Exchange Server computers to the latest released software.

  2. If the upgrade option is available or supported, rebuild the operating system and restore the Exchange Server settings and data.

For information about obtaining and installing Windows 2000 Service Pack 4, see the Windows 2000 Service Pack 4 Web site (