Failed update on Ubuntu 12.04
2694
How do I remove a malformed line from my sources.list?
156835
Why does Ubuntu require restart to complete updates?
46720
sudo apt update error: "Release file is not yet valid"
10023
'Some index files failed to download' while updating
72695
Can't connect to Windows Update
85009
`apt update` failed on Debian Linux
76671
Bootloader install failed
4794
"Sorry, Ubuntu 12.04 has experienced an internal error."
30747
Encountered "/usr/sbin/grub-mkconfig: 8: /etc/default/grub: 4: not found" error while updating
71368
Ubuntu 12.04 won't install
107792
Update information outdated, "Failed to fetch cdrom"
95593
sudo apt-get update returns an error
12614
Upgrade problem
35512
Windows Update not working on Windows 2012 R2 Standard
64744
Restarted computer during update; "the system network service is not compatible with this version"
93574
E: Some index files failed to download. They have been ignored, or old ones used instead after apt-get update
153212
Ubuntu shut down while updating?