Probably since some win10 update, Garmin Express (latest v7.17.3) can't detect and therefore can't even update the Edge 830. At the same time, I also have a watch and car navigation connected to the GE, and the GE has no problem with these. When connected to a PC, the 830 mounts in mass storage mode in Windows without any problems, but the GE no longer detects it. So I don't know what to do with it? I tried to install GE on another PC (different version of win10) and there the 830 connected without any problems, so there is no problem with the device or the USB cable. However, going to update on someone else's PC is not exactly an ideal situation. I also tried to contact Garmin support, but they only advised me to delete the garmindevice.xml file on the device and the result is still the same... Has anyone dealt with something similar? Thanks for the advice.