I have a hard time syncing the clock through garmin express (v.7.9.1.0, always the last one) from windows 10 (update 20H1, I think). I have reinstalled Garmin Express several times, I have looked in the windows 10 regedit to verify that everything is deleted, as advised from the customer service ... nothing. One day it suddenly works, but the rest of the month it doesn't. From Mac it seems to work fine most of the time.
"Update to check for updates"
Press Update button and nothing happens...
With the Mac version of Garmin Express it seems to work fine the times I have tried.