When running apt-get update I get the below error: $ sudo apt-get update Ign:1 http://europe-west1.gce.archive.ubuntu.com/ubuntu artful InRelease Ign:2 http://europe-west1.gce.archive.ubuntu.com/ubuntu artful-updates InRelease Ign:3 http://europe-west1.gce.archive.ubuntu.com/ubuntu artful-backports InRelea se Err:6 http://europe-west1.gce.archive.ubuntu.com/ubuntu artful-backports Release 404 Not Found [IP: 35.195.241.40 80] Hit:7 http://archive.canonical.com/ubuntu artful InRelease Hit:8 http://ppa.launchpad.net/certbot/certbot/ubuntu artful InRelease Hit:9 http://ppa.launchpad.net/ondrej/apache2/ubuntu artful InRelease Hit:10 http://ppa.launchpad.net/ondrej/php/ubuntu artful InRelease Ign:11 http://security.ubuntu.com/ubuntu artful-security InRelease Err:12 http://security.ubuntu.com/ubuntu artful-security Release 404 Not Found [IP: 91.189.91.23 80] Reading package lists... Done E: The repository 'http://europe-west1.gce.archive.ubuntu.com/ubuntu artful Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. E: The repository 'http://europe-west1.gce.archive.ubuntu.com/ubuntu artful-back ports Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://security.ubuntu.com/ubuntu artful-security Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
Ubuntu 17.10 reached End Of LIFE 19th July 2018 .. You should upgrade to 18.04.
If that is not an option, Edit the sources.list and change to old-releases.ubuntu.com