Visual Studio Code will not local flash on Windows 10 - 64 bit machines). “Unable to open USB device: LIBUSB_ERROR_NOT_FOUND” Indicating no USB device is found. Confirmed that the Device (Xenon) is in DFU mode. DFU-util installed and terminal indicates it is OK. Tried alternate USB cables and two different Xenons, rerunning zadig 2.4. and ParticleCLISetup.
Solution found: when running Zadig, the Xenon must be plugged into the PC and in DFU mode. The Zadig is to be run on the specific device.