This mini post gathers both manual removal tips and an automatic solution to help you uninstall Garmin Express. And to perform a clean or complete un-install of Garmin Express, you should consider ridding of or disabling its component Microsoft .NET 3.5 later. Scroll for details.
Log on as the admin user.
Exit the unwanted Express app if you find it's running.
Now, press the blue Quit button on the following Garmin Express info box.
Start > All apps > (go to) Group G > (enter d the following) Garmin folder > right click on the main app > (choose) Uninstall.
Locate yr own Garmin Express in the programs list, launch Uninstall option or press Enter.
Keep or delete your Garmin profile. Then press Uninstall.
Wait while Garmin Express is un-installing itself.
Exit the said Garmin Express uninstall wizard below.
You can consider cleaning Garmin's leftover in Windows' Safe Mode w/ Networking for better comp performance.