Topic Last Modified: 2006-04-21

The Microsoft® Exchange Server Analyzer Tool queries the Active Directory® directory service to determine the value of the serialNumber attribute for all Exchange Server objects in the directory. The serialNumber attribute is a string value that includes both the version of Exchange Server and if installed, the version of the service pack installed. For example, on an Exchange Server 2003 computer that has Service Pack 1 installed, the serialNumber attribute is equal to Version 6.5 (Build 7226.6: Service Pack 1).

If the Exchange Server Analyzer finds the value for the serialNumber attribute contains 6.5 and Service Pack 1 in its string, but does not contain 7226.6 in the string, a warning is displayed.

This warning indicates that the Exchange Server 2003 computer is running a pre-release version of Exchange Server 2003 Service Pack 1.

Because Exchange service packs cannot be uninstalled, it is strongly recommended that you do a full backup of the Exchange Server computer before applying any service packs.

To correct this warning

  1. Obtain the final version of Exchange Server 2003 Service Pack 1 (

  2. Review the Exchange Server 2003 Release Notes (

  3. Review the updates included in Service Pack 1 (

  4. Completely back up the Exchange Server computer.

  5. Apply Service Pack 1 for Exchange Server 2003.

  6. Take another complete backup of the Exchange Server computer.

For more information about installing an Exchange Server service pack, see the Microsoft Knowledge Base article 328839, "How to apply Exchange service packs and hotfixes" (