Insider Builds 20215.1000 require VirtualBox uninstall

[MarcinB]

Hi.
Insider Builds of Windows 10 64 bit 2004 build 20215.1000 require VirtualBox uninstall. I did that, I removed all virtual machine files and folders (that I am aware off), and from the last three builds. I cannot update Insiders Build of Windows 64 bit, as Windows Update asks me to uninstall VirtualBox as incompatible. I have Hyper-V on that machine, and I know that Virtual Box is incompatible with Hyper-V. For VirtualBox to run I need to execute in elevated command prompt:
bcdedit /set hypervisorlaunchtype off
reboot and to get Hyper-V back (to have Docker running) I need to execute:
bcdedit /set hypervisorlaunchtype auto
and reboot.
I tried Insiders Build update in both states and both give the instruction to uninstall VirtualBox, which is not there (see attachment and below - Installation is Spanish, but dialogs are English - sorry for Spanish).

InsidersError

Actualización de Windows 10 22_09_2020 2_18_43 pm.png (17.93 KiB) Viewed 9764 times

Are there leftovers of VirtualBox in registry or somewhere else to remove them to get Insiders build installed? Any other solution?
Kind regards
MarcinB

[scottgus1]

Moved to Windows Pre-Releases subforum.