Switch off Hyper-V without disable functionality in Windows 8.1

The problem was caused by a setup corruption occurred after the upgrade, reinstalling both VMware and Hyper-V, the solution to disable and re-enable the Hypervisor launch, still works.

With Windows 8.1 and VMWare Workstation 10.03 you can use both Hyper-V and VMWare except I suspect you are not getting full virtualization under VMWare. It will only let you run 32-bit VMs with possibly other limitations.

Turning it off through boot entry allows you to run 64-bit VMs again without uninstalling the Hyper-V feature. Either the hypervisorlaunchtype setting being on off or Auto there were no messages about Hyper-V in VMWare.