The Windows Server 2003 version of Administration Tools Pack is not uninstalled after you upgrade to Windows Server 2003 with Service Pack 1

If you do not uninstall the Microsoft Windows Server 2003 version of Administration Tools Pack (AdminPak.msi) before you upgrade to Microsoft Windows Server 2003 with Service Pack 1 (SP1), AdminPak.msi is not uninstalled after you upgrade. If you try use Add or Remove Programs or run AdminPak.msi to uninstall AdminPak.msi, you receive the following error messages:

This problem occurs because the Windows Server 2003 with SP1 version of the AdminPak.msi installation wizard cannot correctly determine the version of the operating system on which AdminPak.msi is being installed.

To use the Windows Server 2003 with SP1 version of AdminPak.msi to uninstall the Windows Server 2003 version of AdminPak.msi, follow these steps:

1. To install the Windows Server 2003 with SP1 version of AdminPak.msi, right-click the Windows Server 2003 with SP1 version of AdminPak.msi file, and then click Install.
2. Click Start, and then click Run.
3. Type Appwiz.cpl in the Open box, and then press ENTER.
4. Click Change or remove programs.
5. Click Windows Server 2003 Administration Tools Pack, and then click Remove.
   
   The Windows Server 2003 version of AdminPak.msi and the Windows Server 2003 with SP1 version of AdminPak.msi are uninstalled.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about AdminPak.msi, click the following article number to view the article in the Microsoft Knowledge Base: