Modern Windows 10 security prevents unsigned, legacy USB-to-UART bridge drivers (like old Silicon Labs CP2102 or Prolific PL2303 chips) from running automatically. If the Willar software states "DEMO mode" at the bottom of the screen instead of "ONLINE", you must force Windows to talk to your hardware.
A simple, lightweight GUI that doesn’t drain system resources. Always run this software in Administrative Mode willar programmer software for windows 10 best