Update errors in Ubuntu 18.04
65
What can I do if a repository/PPA does not have a Release file?
12368
A "failed to fetch" error occurs when apt-get update is run. How do I fix this?
135575
How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
94621
archive.ubuntu.com missing raring-updates
13720
apt-get update fails to fetch files, “Temporary failure resolving …” error
93942
How to fix "Failed to download repository information" error while updating?
96696
timeout errors in apt-get update/install
117728
sudo apt update error
5316
Update from 14.04 to 16.04 failed with GPG error
63176
How can I update to Ubuntu 21.04?
46720
sudo apt update error: "Release file is not yet valid"
29191
Upgrade to 18.04 from 17.10
145400
Error when trying sudo apt-get update - Python related?
43648
Why isn't an upgrade to 20.04 from 18.04 available yet?
30754
Cannot update: "No available releases found"
150033
E: Sub-process /usr/bin/dpkg returned an error code (1) for almost all updates
140850
Why does do-release-upgrade on Xubuntu running version 18.04 not offer to update to 20.04.1?