Ubuntu 20.04 Update fails from not found debian and linux_downloads Releases
65
What can I do if a repository/PPA does not have a Release file?
133
How can I fix a 404 Error when using a PPA or updating my package lists?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
93942
How to fix "Failed to download repository information" error while updating?
1520
How to install software or upgrade from an old unsupported release?
113145
What does 'apt-get install update' do?
63320
Ubuntu repository does not have a Release file
46419
The repository 'http://dl.google.com/linux/chrome/deb stable Release' does not have a Release file
146068
Different Debian releases in /etc/issue
119943
Where can I find a repository for older unsupported releases?
95593
sudo apt-get update returns an error
53609
Download of Ubuntu fails
35973
Ways to update Ubuntu (debian-based distros) offline
54684
File corrupted, how do I reinstall packages on Debian?
74990
Error while trying to upgrade from Ubuntu 18.04 to 18.10: "Please install all available updates for your release before upgrading."
144507
No facility exists in Update Manager to upgrade to a new version, why?
10193
Failed to download repository information due to missing CDROM