No USB connection with GPSmap 60CSx since Win10 upgrade

Since I upgraded my notobook from Win 7 to Win 10 I have no possibility to connect my Garmin GPSmap 60CSx to my computervia USB. I'm working with ExpertGPS and want to upload and download tracks an waypoints.

I've more than one GPSmap 60CSx and all of them are working without problems. Why should I buy a new GPS? Dear Garmin, did you ever hear the term "sustainability"?

Please help all the owners of 60CSx!

Thank you in advance,

Stephan

PS: Dows anybody knows a trick to get the connection?