I don't know how many of you use both Hyper-V and VMware, but if you have Hyper-V installed, I am sure you noticed that VMware will not run as long as Hyper-V has a role on the computer. After some searching here, I see that "hypervisorlaunchtype" has only been discussed with Windows Loader setting it to Auto. I would need to get some input from DAZ on what this will do to the Loader if anything? Anyway, with this it is the opposite, the hyper-v role needs to be off for VMware to work. As you cannot really uninstall Hyper-V once it is installed, you can disable it, and in my opinion is basicly the same as removing it from the system. Since I use VMware more often than Hyper-V, I chose to disable Hyper-V until I have a need for it again. The fastest way, possibly the only way that I have found was to, open Hyper-V manager and "stop service" on the right panel, and then at an elevated command prompt I entered what you see below. Code: Disable Hyper-v at an elevated command prompt, and reboot. bcdedit /set hypervisorlaunchtype off Code: To enable Hyper-v to use Hyper-V again, at an elevated command prompt, and reboot bcdedit /set hypervisorlaunchtype auto Once you set to off, it should give you a confirmation that the setting was applied. After a reboot and the system configures itself, VMWare is functional again. I thought this might be helpful to someone needing to run VMware after Hyper-V has been installed on Windows 8 Pro. At least until something easier or simpler (if possible) can be done.