Hyper-V supports nested virtualization (only Hyper-V nested inside th Hyper-V, though), and seeing as VirtualBox supports a Hyper-V virtualization backend, the

Hyper-V supports nested virtualization (only Hyper-V nested inside th Hyper-V, though), and seeing as VirtualBox supports a Hyper-V virtualization backend, the solution may be to just find and fix all the bugs in that backend code when under Hyper-V