First of all, user requires downloading and installing the Garmin Express software on their system. Sometimes, it may be any error occurs while installing Garmin Express on their windows system. They may have encountered the error like Installation Failed or Installer not launch. They can purchase nuMaps lifetime Garmin map update with the product key from a retail shop with or download it directly from Garmin Website. They should keep in mind that the update may not work on all devices. If their operating system is not compatible, then login to your Garmin account from. For Support Call Our Customer Support Team