Topic Last Modified: 2006-08-21

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

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

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

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

A ServicePackMajorVersion key value of 1 indicates the server has Service Pack 1 (SP1) installed.

Finally, the Exchange Server Analyzer queries the CIM_Datafile WMI class to determine the value of the Version key for the Msgina.dll file.

The Exchange Server Analyzer displays an error if the following conditions are true:

This error indicates that the version of Msgina.dll installed on the server may cause excessive page file activity and a decrease in performance.

To resolve this problem, obtain the update referenced in Microsoft Knowledge Base article 905865, "The sizes of the working sets of all the processes in a console session may be trimmed when you use Terminal Services to log on to or log off from a computer that is running Windows Server 2003" (