Intel HAXM is required to run this AVD

Question

I have installed Android Studio 3.3.1 and everything worked perfectly until I closed it. When I try to open a run again my project it says:

Intel HAXM is required to run this AVD

Unknown error, What should I do?

Answer 1

In my case, I installed software which is required to enable Hyper-V. If you also face it, check it.
On Window (I mean I config on Window, not Ubuntu or MacOsX), it's in "Turn Windows feature on or off". Uncheck Hyper-V and restart your computer.