I am trying to use my Arduino UNO on my Windows 10, but unfortunately I get an "Access to COM Port is denied" error... I already tried to change my COM Port number (only my Arduino is using a COM Port), but nothing changes. I am using the latest Arduino IDE 1.6.7. On Windows 7 there was no such error...
I therefore would be very grateful, if I could get any help.
All the best - Happy new year!