How can I remove the Guest account from my admin account? Because there is no use of have a password for the admin account will the guest is open to anyone.
3 Answers
Open /etc/lightdm/lightdm.conf file from your terminal using the following command
gksudo gedit /etc/lightdm/lightdm.conf
Add the following line
allow-guest=false
Save and exit the file. Restart the machine.
To disable Guest-session have to edit lightdm.conf
. To do,
open lightdm.conf
using any text editor like nano
, gedit
as follows,
Open terminal(Ctrl+Alt+T) and type the following command(For 12.04 LTS),
$ sudo gedit /etc/lightdm/lightdm.conf
For 14.04 LTS,
$ sudo gedit /usr/share/lightdm/lightdm.conf.d/50-no-guest.conf
And make the text as following,
[SeatDefaults]
greeter-session=unity-greeter
user-session=ubuntu
allow-guest=false
Else simply you can type the following command in terminal(Ctrl+Alt+T),
$ sudo /usr/lib/lightdm/lightdm-set-defaults -l false
It will automatically do the above said in lightdm.conf
.
Update
Also do by opening terminal(Ctrl+Alt+T) and type the following command,
sudo sh -c 'printf "[SeatDefaults]\nallow-guest=false\n" >/usr/share/lightdm/lightdm.conf.d/50-no-guest.conf'
Save the file and restart the system.

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Open terminal (ctrl+Alt+T) and enter the command
sudo gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
Add the following line to that file as last line, save and close.
allow-guest=false
Reboot and see.

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