You will receive the subject message if Windows 2000 Server was installed from a retail CD-ROM and you are using an OEM Standard Edition CD-ROM to install Windows Server 2003. You need a retail Windows Server 2003 CD-ROM.

NOTE: The OEM version of Windows Server 2003 Standard Edition is designed to upgrade only an OEM installation of Windows 2000 Server.

NOTE: This issue can occur when upgrading to other Windows Server 2003 editions.

NOTE: See "Windows Setup Does Not Support Upgrading from Microsoft Windows 2000 Server" Error Message When You Try to Upgrade to Windows Server 2003.

NOTE: See Windows Server 2003 Upgrade Paths.

NOTE: See Required User Rights for the Upgrade from Windows 2000 to Windows Server 2003.