I've found two forum threads at Microsoft about the issue: Raspberry Pi 3B+ https://social.msdn.microsoft.com/Forums/en-US/547a6084-7c7f-40da-911a-37bc6e087d6f/raspberry-pi-3b?forum=WindowsIoT and Raspberry Pi 3 B+ Windows IOT Core Boot Work Around https://social.msdn.microsoft.com/Forums/vstudio/en...