Garmin Express automatically installed a version update this morning and now the ANT stick is not being found. It just keeps searching for it. Have never had any problems before. Have shut down Garmin Express, restarted computer, tried different USB ports and have confirmed that PC is seeing ANT stick.
same issue on two different computer... tried with two different gps...
all computer used windows 10
FWIW, I don't have that problem with Win 10 (not Anniversary version) and 4.1.27
I've been having a similar issue with my Forerunner 225 watch. I've had an email from the customer support and they advised me to reset my watch as per the instructions in the link below and then try to sync again which has worked.
http://static.garmincdn.com/shared/uk/customer-care/Master_reset_instructions.pdf
Hope this helps.