To upgrade from a version of GeoExpress older than version 9.5, you need to uninstall the older version of GeoExpress before you run the installer.
NOTE: If you are attempting to upgrade from GeoExpress 9.1 or earlier, you will need to uninstall the older version of GeoExpress first. See Instructions for GeoExpress 9.1 and earlier on the GeoExpress Installers page (https://www.lizardtech.com/support/geoexpress/installers).
You don't need to log on as an administrator but you do need to be able to perform admin overrides.
SETUP.EXE
to start the GeoExpress Installation Wizard.Serial numbers are specific to a version of GeoExpress, and determine the functionality available to you. For example, there are different serial numbers for GeoExpress Standard and GeoExpress Unlimited.