apt-get update fails with " Clearsigned file isn't valid, got 'NOSPLIT'"
24355
Got NODATA issue: 'NODATA' (does the network require authentication?)
4124
I cannot run apt update properly - apt update hangs
1520
How to install software or upgrade from an old unsupported release?
6105
What is the easiest way to resolve apt-get BADSIG GPG errors?
87672
Apt-Get system completely broken. possible to completely reinstall it?
113442
apt-get not working on Ubuntu 16.04, problems with kernel packages
40885
What should I do when I got the KEYEXPIRED error message after an apt-get update?
158683
apt-get update failed because certificate verification failed because handshake failed on nodesource
83216
apt get update missing release file
140893
Error when using apt-get update
28650
`apt-get update` cannot find Ubuntu servers
16578
How to upgrade a single package using apt-get?
21382
What does "sudo apt-get update" do?
93942
How to fix "Failed to download repository information" error while updating?
119943
Where can I find a repository for older unsupported releases?
74227
dpkg error when using apt-get install
116348
Why isn't apt full-upgrade getting an updated software key signature for skype