Can not run apt update
44683
Problem with sudo apt update in Ubuntu 18.04: Post-Invoke-Success if /usr/bin/test -w /var/lib/command-not-found/
72082
Is using Software Updater the same thing as running apt-get update and apt-get upgrade?
13399
Why can I no longer (un)install packages via apt-get after doing a partial dist-upgrade?
16753
Why should I regularly run 'apt-get update' and similar commands?
30754
Cannot update: "No available releases found"
74763
Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution)
153142
Cannot run apt update in a Debian docker container
155918
What information do I need to solve an APT dependency issue?
80899
"no public key available" on apt-get update
46720
sudo apt update error: "Release file is not yet valid"
51598
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
57214
Could not get lock /var/lib/apt/lists/lock
113379
Updating the repository isn't working
35146
Will apt-get dist-upgrade upgrade my system to newer version?
1520
How to install software or upgrade from an old unsupported release?
100494
Update Manager asking me to update kernel but apt-get upgrade does not?
105770
Cannot use apt-get/dpkg -- Input/output error