“waiting for target device to come online” in Android Studio 2.3

Question

Recently upgraded to Android Studio from 2.2.3 to 2., running on Win10

Emulator stopped working since then. Tried installing other images(25 rev 4)/upgrading for AVD

Answer 1

For me what was happening was the Virtual device never booted.

What fixed this was:

cd ~/.android/avd//
rm *.img

Then I restarted the virtual device and it came on line.