sudo gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
Add the following line, save and then close. allow-guest=false Reboot, and you're set. copy and pasted, use a searX engine, m8, won't hurt :P
sudo gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
Add the following line, save and then close. allow-guest=false Reboot, and you're set. copy and pasted, use a searX engine, m8, won't hurt :P