I am not Ubuntu literate however noticed my 16.04 LTS is not updating when I try to update manually I get following message


I would really appreciate if someone could assist me step by step assuming I know nothing about Ubuntu.


1 Answer 1


Only one program can get lock on the admin directory at a time. Since you have the graphical software installer open, it has the lock, and your terminal command can't work.

Close the graphical installer and try your command again. As a last ditch effort, reboot and try again.

Not the answer you're looking for? Browse other questions tagged .