Hi guys, I'm running parallels 8 on a Macbook Pro Retina with Windows 8. I've install the SDK for WP8 development and obviously the emulator doesn't work. However, some of my co-workers have been able to get this to work on VMWare using the changes outlined below. Is there anyway to do something similar with parallels? Before running the Windows 8 VM, a couple of configuration changes are needed. This is really the new finding, at leads to me: All the credit goes to a person called Juha and his posting at: http://communities.vmware.com/thread/423744?tstart=0 1) Added (or cheeked they are present) to .vmx file these rows: hypervisor.cpuid.v0 = "FALSE" mce.enable = "TRUE" vhv.enable = "TRUE" 2) Settings -> CPU and memory -> Advanced: checked "Enable hypervisor applications in this virtual machine" 3) Settings -> CPU and memory: make sure 2 Cores (or more?) are assigned to the Virutla machine 4) Settings -> Advanced: Preferred virtualizationn engine: Intel VT-x with EPT After restarting Win 8 x64 VM, the HyperV system (and e.g. WIndows 8 Phone SKD debugging / Windows Phone Emulation) works perfectly.