Can't run Windows Phone Emulator on Windows 10 with Parallels 11

Question

I can't run a Windows Phone Emulator on Windows 10 using Visual Studio 2015 Enterprise with Parallels 11 on my MacBook.

I've already tried to change the number of processors to 1 in Parallels and Hyper-V, but nothing seems to work.

This is the error I'm getting:

SOLVED

I had to enable nested virtualization' in Parallels by going to 'Hardware settings' -> 'CPU & Memory' -> 'Advanced settings' -> check 'Enable nested virtualization'