Windows Phone Emulator not working

Question

When I try to start debugging my windows phone 8 app in Emulator WVGA 512MB the following error message is showing

The Windows Phone Emulator wasn\'t         


        

Answer 1

At last the problem is solved.

1. Open Hyper V Manager
2. Delete all installed Virtual Machines
3. Delete all Virtual Switches
4. Restart system
5. Rerun visual studio

Thanks to Shiv Kumar Ganesh