Ubuntu update to 16.04 error
1520
How to install software or upgrade from an old unsupported release?
86777
Distribution upgrade problem "No new release found"
14260
16.04: Unable to install compass
129223
Ubuntu upgrade from 17.04 to 18.04
64509
Can't update from official repositories [Error 409]
6173
"method driver /usr/lib/apt/methods/https could not be found" update error
72603
Unsupported major.minor version 52.0
125352
How to install libboost_version1.59 or newer on Ubuntu16.04
51350
While updating the ubuntu 16.04 does not have a Release file Error
22944
16.04 new installation gives grub-efi-amd64-signed failed installation /target/ ubuntu 16.04 at the end
26387
After Upgrade to Ubuntu 20.04: "Oh no! Something went wrong"
46720
sudo apt update error: "Release file is not yet valid"
129101
Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
115421
Ubuntu 13.10 to 14.04 Lts does not upgrade, keeps showing error
35931
Apt update error - "An error occurred during the signature verification" (Chrome)
98511
16.04 Cannot install anything from Ubuntu Software center
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."