Failed to install HelloAndroid.apk on device 'emulator-5554!

Question

Ive seen the questions posted about this issue. I understand it takes several minutes for the emulator to configure itself and launch. But if Im getting the specific error

Answer 1

wait for the emulator to setup completely and then test your app. Also, I would leave you AVD open so you dont have to wait so long everytime you run your application.

When it shows the red writing, don't close anything - leave it there and then press the run button again. Worked like a charm.