I am having the same difficulty with GpsGate (v188.8.131.520) and with my Garmin Oregon 650t. GpsGate says it is "Running OK! GPS data with valid position". However all the COM ports state " Failed to create virtual serial port". I am using Windows 10 Pro, 64-bit. I have GpsGate running in Administrator mode, and Secure Boot is off. Is it possible all the low numbered COM ports are already assigned? Device Manager does not show any COM port devices. Any suggestions?
I notice in my Windows 10 Device Manager under Events, Information, it reads, "Device USB\VID_091E&PID_0003\5&1003806&0&1 requires further installation."
Is there a problem with the Garmin latest version USB driver (v. 184.108.40.206)?