Microsoft MakeCode

Lego ev3 with makecode

Our school just got new Dell Chrome 3100 2in1 Chromebooks. Makecode Lego Mindstorms has always worked great with all of our older Chromebooks. I am using a usb cable to hook up the chromebook to the brick. The problem is that when I drag the uf2 file to the Ev3 I now get “Copy operation failed. This file could not be modified.” and I am unable to get the file to transfer to the brick. Using latest Chrome OS.
Thanks