Hello, everyone. My name is Tom Wilson and I am here to help Garmin users who ask, what to do when Garmin Express not working? You should start with installation if you notice the non-working of Garmin Express. For uninstalling Garmin express, head to the Control Panel, and then go to the Garmin Express download page. Download the Garmin Express setup file in its entirety and reinstall the Garmin program.