On some machines, I get the following error when I run an "pacman -Syyu".
error: key "CEB167EFB5722BD6" could not be looked up remotely
I've found the best fox so far on this page.
#open /etc/pacman.d/gnupg/gpg.conf as root #comment out existing server address and replace with following #save the file afterwards http://pool.sks-keyservers.net #run following command as root pacman-key --refresh-keys #if the upgrade is still not working, signed the key (be aware to know what you are doing here!) pacman-key --lsign-key CEB167EFB5722BD6
This was working on almost all machines. Only a few percent where still not able to be upgraded. What I did to fix this issue was to copy the the directory in "/etc/pacman.d/gnupg" from a working host to the not working one (make a backup first of course).