Garmin Express software 6.21.0.0 running on two Windows 10 machines with the latest versions of software. Garmin Edge Touring software 4.20 and Maps Europe 2020.10. On my desktop on return from a bike ride Sync starts and never ends has run for hours. Connect up to my desktop and syncs inside 20 seconds. I have uninstalled Garmin Express and reinstalled it same problem I have uninstalled Garmin Express and cleaned every mention of Garmin from the registry. Reinstalled Garmin Express sync problem persists. What do I try now?