Virtualbox

If one gets the kernal messagetype into the terminal

sudo modprobe vboxdrv

Download the Virtualbox guest editions manually from their website, copy guest iso to home folder, then chmod +x to make the script executable. then simply type into the terminal:

./virtualbox.sh

grant vbox user priveledges

sudo usermod -a -G vboxusers $USER

if you get problems updating the guest editions automatically, update the linux headers and then retry. type into a terminal:

sudo apt install linux-headers-amd64

Then try to reinstall the Guest additions.