virtualbox.org

Hi.
After I installed the usual system updates my VMs stopped working.
I get a guru meditation error on all my VirtualBox VMs (Linux and Windows guests).
The problem persists even after reinstalling VirtualBox and rebooting the host.

Host:
Ubuntu 20.04
Kernel version: 5.4.0-37-generic
VirtualBox Version: 6.1.10 r138449

Ok I found a "fix".
I removed the virtualbox packages with the following command: After that I searched for files on my system with "virtualbox" in their name and removed them manually. There were some files in "/lib/udev/rules.d" and " /etc/rc*.d".
With the Files removed I rebooted the machine, and reinstalled virtual box.
I don't know why exactly it fixed it, or why there was a problem in the first place, or why these files didn't got removed when removing the packages via apt.

The fix with removing virtualbox and reinstalling it after rebooting was actually in other posts and forums, but without removing the files it didn't fix it.