Quick fix if pacman fails to upgrade

If you have a large pacman update that includes archlinux-keyring package, you may find it fails to install. Remain calm it is a simple fix.

In a terminal run

sudo pacman -S archlinux-keyring

This will update keyring first once finished then update as normal:

sudo pacman -Syyu

You should be good to go.

This only really applies to older ArchBang isos and an install that has not been recently updated.