How to Resolve the “Raw-Mode is Unavailable Courtesy of Hyper-V” VirtualBox problem

Oracle VM VirtualBox is a free x86 virtualization hypervisor developed by Oracle Corporation. It can be installed on a variety of operating systems, including Windows, macOS, Linux, Solaris, and OpenSolaris. However, if you run it on Windows, you may see the following error message: Raw mode is not available on Hyper-V (VERR_SUPDRV_NO_RAW_MODE_HYPER_V_ROOT).

What causes `Raw-Mode is Unavailable Courtesy of Hyper-V`?

The main reason for the error `Raw-Mode is unavailable courtesy of Hyper-V’ is the fact that Hyper-V is enabled on your machine. This proprietary virtualization technology from Microsoft allows you to create virtual machines on x86 and x64 systems running their own version of Windows.

A popular scenario that can cause this problem is when the HyperVisorLaunchType service is set to AUTO. This will force your system to check for applications that use VT-x before every virtual machine startup. read more