Need to upgrade Virtualbox when upgrading Ubuntu

To fix an error about a missing kernel driver that keeps telling you to install dkms and run /sbin/vboxconfig, follow the process below. This error usually happens when going between major or point releases–say Virtualbox 5.0 → 5.1 or 4.3 → 5.1). It can also happen when upgrading Ubuntu say from 14.04 to 16.04.

Fix

  1. uninstall your old Virtualbox by
   apt remove virtualbox
   

or

   dpkg -r virtualbox-4.3
   
  1. reinstall new Virtualbox
   gdebi virtualbox*.deb