Hi Marcel, Try right-clicking on the device in Device Manager and selecting "Uninstall". Say yes if it asks you if you want to uninstall the drivers too. Then unplug your Netduino from your PC. After that, uninstall and re-install the Netduino 4.3.1 SDK. Plug your Netduino back into your PC. Is your Netduino Plus 2 now detected properly? Chris
Chris, I'm just starting out with my fresh new Netduino Plus 2 and this helped me get my device to show up again after updating my firmware to v4.3.1! Thank you!