“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

I tried doing a “Cold Boot Now” in the device, but got an error saying: AVD Pixel_API_24 is already running. If that is not the case, delete the files at /.android/avd/Pixel_API_24.avd/*.lock.

After deleting a .lock file in the suggested folder the “Cold Boot Now” worked and the device was back to normal.