Remove Guest Login Option on Ubuntu 14.04 & 16.04 LTS

Post date: May 09, 2014 3:56:28 PM

Just press Ctrl+Alt+T on your keyboard to open Terminal.

When it opens, run these commands:

sudo pico /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf

Add this line, save and close.

allow-guest=false

Reboot your PC, and the guest option will be gone.