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EXCHMEM.DLL present in Windows System32 folder

[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 http://go.microsoft.com/fwlink/?linkid=34707.]  

Topic Last Modified: 2005-12-15

The Microsoft® Exchange Server Analyzer Tool queries the CIM_Datafile Microsoft Windows® Management Instrumentation (WMI) class to determine whether it can read the value of the Version key for \Windows\System32\Exchmem.dll. If the Exchange Server Analyzer can read the Version key, Exchmem.dll is present in the System32 folder.

The Exchange Server Analyzer also queries the Active Directory® directory service to determine the value of the serialNumber attribute for all objects that have an object class of msExchExchangeServer. If the string value includes "Version 6", the computer is running Exchange 2000 Server or Exchange Server 2003.

The Exchange Server Analyzer displays a best practice message if the following conditions are true:

  • Exchmem.dll is present in the System32 folder.

  • The computer is running Exchange 2000 Server or Exchange Server 2003.

Ordinarily, two copies of Exchmem.dll will not exist on an Exchange server. However, sometimes a second Exchmem.dll file is added by using an in-place upgrade from previous releases of the product. The presence of two versions of the file can cause setup to fail during the installation of service packs. To prevent problems, it is recommended that you rename or remove the Exchmem.dll file in the \Windows\System32 folder.

To remove or rename a second version of Exchmem.dll
  1. Stop all Exchange services.

  2. Rename or remove the Exchmem.dll file in the \Windows\System32 folder.

  3. Restart all Exchange services.

 
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