RTR3InitEx failed with rc=-1912 (rc=-1912) The VirtualBox kernel modules do not match this version of VirtualBox. The installation of VirtualBox was apparently not successful. Executing'/sbin/vboxconfig' may correct this. Make sure that you do not mix the OSE version and the PUEL version of VirtualBox. where: supR3HardenedMainInitRuntime what: 4 ERR_VM_DRIVER_VERSION_MISMATCH (-1912) - The installed support driver doesn't match the version of the user
dpkg --list | grep virtualbox
ii unity-scope-virtualbox 0.1+13.10.20130723-0ubuntu1 all VirtualBox scope for Unity ii virtualbox-5.1:i386 5.1.12-112440~Ubuntu~xenial i386 Oracle VM VirtualBox
Already tried solutions from link VirtualBox kernel modules do not match the version of VirtualBox
my secure boot is also disabled.