I have the latest version of Android Studio and an Android device.
I turned on developer mode on my device and plugged it to my lap top via USB.
I didn't get the prompt message that asks me to authorize USB debugging with this pc and also my device list was empty when I ran on the cmd adb devices
.
I tried to do adb kill-server
and then adb start-server
but the devices list was still empty and I still didn't got any authorize usb debugging message on my phone.
I tried to restart phone + PC + change USB cable but nothing.