Topic Last Modified: 2008-11-13

The Microsoft Exchange Analyzer Tool examines the following registry entry to determine the version of the Microsoft Windows operating system that is running on the computer:

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

Version values are as follows:

CurrentVersion value Microsoft Windows operating system


Microsoft Windows NT® Server 4.0


Microsoft Windows 2000 Server


Microsoft Windows Server™ 2003


Microsoft Windows Server 2008

Next, the Exchange Analyzer queries the Win32_OperatingSystem Windows Management Instrumentation (WMI) class to determine the value for the ServicePackMajorVersion key. The value for the ServicePackMajorVersion key indicates which Windows service pack is installed on the computer.

Finally, the Exchange Analyzer queries the CIM_Datafile Microsoft Windows® Management Instrumentation (WMI) class to determine the value that is set for the Version key of the Tcpip.sys file.

If the Exchange Analyzer determines that all of the following conditions are true, the Exchange Analyzer displays an error message:

This error means that there is a Scalable Networking Pack (SNP) rollup hotfix package available for this computer that may address possible networking issues for this computer in some configurations.

Symptoms of these networking issues may include, but are not limited to the following:

To help address some of the symptoms listed above that might be affecting your server, download and install the SNP hotfix rollup package described in Microsoft Knowledge Base article 950224, "A Scalable Networking Pack (SNP) hotfix rollup package is available for Windows Server 2003" (

For more information about this issue, see the following Exchange resources:

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