I'm running VirtualBox 6.1.4 with Hyper-V but when I try to open up a VM I get the following error:

Failed to open a session for the virtual machine vagrant_default_1583698990398_29087.


VT-x is not available (VERR_VMX_NO_VMX).

Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

According to https://www.virtualbox.org/wiki/Changelog-6.0 VirtualBox 6.0.0 introduced Hyper-V support. Quoting it:

Added support for using Hyper-V as the fallback execution core on Windows host, to avoid inability to run VMs at the price of reduced performance

So what gives? Is Hyper-V supported or not?

I'm running Microsoft Windows [Version 10.0.18363.657]. Here is what "Apps & Features" says I have installed: https://pastebin.com/dJrg7yD8. Here's what "Turn Windows features on or off" says: https://pastebin.com/6RT0xeN0

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    Does this answer your question? Virtual box is not working on windows 10 – Ramhound Mar 9 '20 at 11:14
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    There are bugs with it, there's at least one ticket with VirtualBox. It may work, but a lot of people have issues with it: virtualbox.org/ticket/18387 – essjae Mar 9 '20 at 16:15
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    I wanted a screenshot. Anyways you don't have the required Windows Hypervisor Platform installed. – Ramhound Mar 10 '20 at 0:18
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    There are some known issues with Windows 10 version 1909 and VirtualBox with Hyper-V support. Even if you were to get it to work, you will suffer from severe performance problems, it's still considered an experimental feature. The next version of VirtualBox will address some of these concerns. I have no idea if some of your issues are due to Vagrant or not. There are no solutions to your problem at this time. – Ramhound Mar 10 '20 at 0:39
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    Since that won't be the case for very long, I refuse to submit an answer to that effect, a single vague sentence Oracle developer makes a horrible answer. Bottom Line: Your inability to run VirtualBox with Hyper-V installed is a known issue. – Ramhound Mar 10 '20 at 0:41

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