upgrade – ESM 401 Unauthorized error on Ubuntu 18.04

deb http://archive.ubuntu.com/ubuntu/ bionic-backports main universe multiverse restricted
deb http://archive.ubuntu.com/ubuntu/ bionic main universe multiverse restricted
deb http://archive.ubuntu.com/ubuntu/ bionic-updates main universe multiverse restricted
deb http://security.ubuntu.com/ubuntu/ bionic-security main universe multiverse restricted

Source: upgrade – ESM 401 Unauthorized error on Ubuntu 16.04 – Ask Ubuntu

upgrade – ESM 401 Unauthorized error on Ubuntu 18.04 was last modified: June 3rd, 2024 by Jovan Stosic