Unable to install new package or update on 14.04 LTS
19361
Can't update because the word prox* is blocked
98844
upgrade 14.04 with errors and shows red sign on top
35243
Is it safe to do-release-upgrade from 12.04.4 to 14.04.1?
118978
Not all updates can be installed: partial upgrade
85724
Cannot update/get any packages. gedit not installed
49149
How do I solve "Unable to fetch some archives, maybe run apt-get update or try with --fix-missing" error?
24734
Google Chrome update won't install due to unmet dependencies
76905
Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
132495
14.04.5 to 16.04 Update failed - xenial.tar.gz.gpg missing
50810
No upgrade available for 19.04 from 18.10
12534
14.04 --> 16.04 failed; apt (>= 1.0.1ubuntu2.13)' is not installed
76241
"no public key available" while upgrading using update-manager
30754
Cannot update: "No available releases found"
74763
Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution)
1520
How to install software or upgrade from an old unsupported release?
1632
How do I fix a "Failed to download package files" error?
60659
Install newer package version from trusty-backports