Topics created by rcoppens

I founded the solution, so I put this here: Please open “Settings/System/System Information”, then click Advanced System Settings Then press environment variables Select the Path element in User Variable or System Variable, then click Edit Fill in C:\Windows\System32 and press OK all the way. Then turn off the Arduino and turn it back on to compile normally.

@felmue many thanks Remy

@rcoppens ESPNow !