Arduino shutting down while using serial monitor

Hi guys,

I'm using the arduino microsoft app on my microsoft surface go, with windows 10.

Since a week my arduino program starts shutting down when i start the serial monitor. i have tried redownloading it but the same problem re-occurs.
otherwise the programm works fine, i can verify sketches and upload them and everthing works. i just goes wrong the moment i click on serial monitor..

i was wondering if anybody else is experiencing the same problem and knows how i could fix this?

thanks!

The Arduino is supposed to reset when you open the serial monitor.