This issue occurs if the %SYSTEMDRIVE%\ExchangeSetupLogs folder has been deleted, renamed, or moved after the installation of Exchange 2007.
Note The %SYSTEMDRIVE% variable represents the root directory of the drive on which the operating system is installed. For example, %SYSTEMDRIVE% may represent the root directory of drive C.
To resolve this issue, follow these steps:
If the ExchangeSetupLogs folder was renamed or moved, restore it to the root folder of the drive on which the operating system is installed.
Note If the ExchangeSetupLogs folder was removed and cannot be restored, create an empty folder that is named ExchangeSetupLogs in the root folder of the drive on which the operating system is installed. For example, create the following folder:
Reinstall Update Rollup 1 for Exchange Server 2007.
For more information about terminology that Microsoft uses to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates