My configuration is:
Mac Book Pro running Virtual Box running Windows 8.1, There I am getting error.
I have checked in Control Panel>>Programs and Features >> Hyper-V: all the components are checked. Also, I have checked the services (run>> services.msc) all hyper-V services are running perfectly.
Tried with Windows 10 and Windows 8.1, but no luck. Any Help will be appreciated !
According to the suggestion given, I uninstalled Hyper-V and tried it again, I got this error "Hyper-V is not enabled"
Thanks !
![1]](https://i.stack.imgur.com/Qlm6y.jpg)


Windows HyperV and Virtual Box are trying to do the same job and will conflict with each other. Since HyperV takes control on boot, you'll need to uninstall HyperV to use the emulator in Virtual Box.