What operating system are you using?
What Arduino device are you trying to connect to?
If you are running Windows, does the device show under Device Manager?
You may have a look at this just in case the driver is not behaving
https://www.arduino.cc/en/Guide/DriverInstallationIf you are running Linux, if you type 'dmesg' you should see some similar to the following:
NOTE: This is with Ubuntu 16.04.6 LTS
[ 3149.756333] usb 2-7.3: new full-speed USB device number 8 using ehci-pci
[ 3149.871950] usb 2-7.3: New USB device found, idVendor=2341, idProduct=804e
[ 3149.871955] usb 2-7.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3149.871958] usb 2-7.3: Product: Arduino MKR1000
[ 3149.871960] usb 2-7.3: Manufacturer: Arduino LLC
[ 3149.871963] usb 2-7.3: SerialNumber: 386A2F51514D464641202020FF10122A
[ 3149.921977] cdc_acm 2-7.3:1.0: ttyACM0: USB ACM device
[ 3149.923751] usbcore: registered new interface driver cdc_acm
[ 3149.923753] cdc_acm: USB Abstract Control Model driver for USB modems and IS
Have you gone through the following?
https://create.arduino.cc/projecthub/133030/iot-cloud-getting-started-c93255?f=1And/Or
https://create.arduino.cc/getting-startedIf you have the Arduino IDE installed locally, is the board seen there?