Arch Linux: Key Could Not Be Looked up Remotely
Just a general system update:
$ yaourt -Syua <OUTPUT OMITTED> downloading required keys... error: key "4A1AFC345EBE18F8" could not be looked up remotely error: required key missing from keyring error: failed to commit transaction (unexpected error) Errors occurred, no packages were upgraded.
The solution seems to be quite simple, i.e. to refresh the keyring database:
$ sudo pacman-key --refresh-keys
Now, it the installation of the previously downloaded packages went as expected:
$ yaourt -Sua
As usually, a helping source of information is Arch Linux's forum.
Not sure why this simple command can't be configured to run at first when an update of core/archlinux-keyring is present. Maybe, it is because:
Arch Linux is a tough playground. Beware, behold and KISS!