ADB server can't start android

Question

I have installed adt bundle eclipse. However, I can\'t seems to run the AVD. I have the problem of

ADB server didn\'t ACK 
failed to start daemon
         


        

Answer 1

When this happens I open Activity Monitor (on mac) or Task Manager (on windows) and look for the ADB process and force close it (sometimes there are more than one, close those to) and then press the Run button again in Android Studio or Eclipse.