Which this Ubuntu’s fancy option person can access many precious privacy content which you don’t want to show. So, I am going to show easy method.

Step1: Open Terminal.

Open Terminal by Ctrl+Alt+T. Goto Manual search from Ubuntu fancy menu type or search from application department.

Step2: Terminal Command.

* Type command in Terminal.

sudo gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf{ Gedit editor will popup. }

Some time it ask password so type it. (Which kind blank show due to security concern.)

* Save new command in “50-ubuntu.conf” file.

[SeatDefaults]
	 user-session=ubuntu 		
	 allow-guest=false		{ Write this line after above to two or other any line. }

Save by Ctrl+S.

* If you don’t have Gedit then use nano who come preinstall in terminal.

sudo nano /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf{ Nano editor will open in Terminal. }

Some time it ask password so type it. (Which kind blank show due to security concern.)

* Save new command in “50-ubuntu.conf” file.

[SeatDefaults]
	 user-session=ubuntu 		
	 allow-guest=false		{ Write this line after above to two or other any line. }

Save by press F3. After for exit press Ctrl+X.

Step3: Use.

Restart computer and see it by your self asking guest option.

Ha ha ha Aha… You find Dnhaa.. Volaa.. Your guest become Gost.