VERR_NEM_VM_CREATE_FAILED on launching macOS in VirtualBox in Win 10 1903

I'm trying to launch virtual machine from VirtualBox(6.0.14-133895 with extension pack) on Windows 64bit 10 Pro version 1903 18362.476 and frustratingly get the following error:

Call to WHvSetupPartition failed: ERROR_SUCCESS (Last=0xc000000d/87) 
(VERR_NEM_VM_CREATE_FAILED).

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

I tried everything from here, here, here, here and here: turn off features Containers, Hyper-V, Windows Sandbox, Virtual Machine Platform, Windows Defender Application Guard, Windows Hypervisor Platform, Linux subsystem, turn off Core Isolation Memory Integrity, disable VT-d in BIOS, reboot machine dozens of times, reinstall VirtualBox and reboot again. Tried this command also:

bcdedit /set hypervisorlaunchtype off

Nothing happens, I still get this error. I got Docker on my machine and everytime after reboot, system tells me that:

Hyper-V and Containers features are not enabled.
Do you want to enable them for Docker to be able to work properly?
Your computer will restart automatically.
Note: VirtualBox will no longer work.

Please help!

P.S. Here is my BIOS preferences:

This helped me with exactly the same error:

My hunch was that turning on Sandox activated some part of Hyper-V which was not deactivated when Sandbox was turned off so I installed Hyper-V (no Sandbox), rebooted and then immediately uninstalled Hyper-V and rebooted twice. No more error message. Both VM's working as I expect them to.

by fieldar from https://forums.virtualbox.org/viewtopic.php?f=38&t=92453&start=75