Vagrant comes with support out of the box for Hyper-V, a native hypervisor written by Microsoft. Hyper-V is available by default for almost all Windows 8.1 installs.
The Hyper-V provider is compatible with Windows 8.1 only. Prior versions of Hyper-V do not include the necessary APIs for Vagrant to work.
Hyper-V must be enabled prior to using the provider. Most Windows installations will not have Hyper-V enabled by default. To enable Hyper-V, go to "Programs and Features", click on "Turn Windows features on or off" and check the box next to "Hyper-V."
Warning: Enabling Hyper-V will cause VirtualBox, VMware, and any other virtualization technology to no longer work. See this blog post for an easy way to create a boot entry to boot Windows without Hyper-V enabled, if there will be times you will need other hypervisors.