Apt-get update not working in Ubuntu 16.04 "temporary failure resolving"
13720
apt-get update fails to fetch files, “Temporary failure resolving …” error
40885
What should I do when I got the KEYEXPIRED error message after an apt-get update?
75879
How do I get add-apt-repository to work through a proxy?
148965
apt vs apt-get error code
28650
`apt-get update` cannot find Ubuntu servers
1632
How do I fix a "Failed to download package files" error?
49149
How do I solve "Unable to fetch some archives, maybe run apt-get update or try with --fix-missing" error?
84803
sudo apt get update gives error - The package cache file is corrupted
73032
Installing apt-get
21382
What does "sudo apt-get update" do?
5877
"Failed to fetch" while updating
126343
How to downgrade a package via apt-get?
14336
apt-get doesn't work behind a proxy
148676
Where is the result of the "apt-get update" package list stored
119610
500 Internal Server Error whenever I use apt-get
12534
14.04 --> 16.04 failed; apt (>= 1.0.1ubuntu2.13)' is not installed
122742
Why does apt-get install a newer dependency than supported by the specified package