So the update fails and the forums are flooded with questions about this. I don't know why this is a particular Manjaro problem -but it seems to be.
This also happens if it is a long time since you updated.
To fix this:
Code: Select all
sudo pacman -Syyuu archlinux-keyring manjaro-keyring
sudo pacman-key --init
sudo pacman-key --populate archlinux manjaro
sudo pacman-key --refresh-keys
sudo pacman -Syyuu
That should do it.