cannot update repositories in ubuntu /
1520
How to install software or upgrade from an old unsupported release?
67241
How do you update a GitHub repo fork in the web interface?
64509
Can't update from official repositories [Error 409]
339
How to resolve "Failed to download repository information"?
123455
Unable to update Node JS - keeps returning to old version [Ubuntu 15.04]
10633
software updater failed to download repository information
61177
How to set up an APT repository?
19565
Restore default apt repositories in sources.list from command line
15183
Elementary OS PPA gives “The repository does not have a Release file.” error
122588
Can't connect to ubuntu archive when using apt-get update
138125
dpkg: error: cannot scan updates directory `/var/lib/dpkg/updates/'
94621
archive.ubuntu.com missing raring-updates
149984
Can't update or install anything. Ubuntu 3.11.0.14
31506
How do I update Ubuntu manually?
13832
How to update Ubuntu terminal?
65099
Unable to install any updates through update manager/apt-get upgrade
100494
Update Manager asking me to update kernel but apt-get upgrade does not?