I have a ppa update error message:
W:Failed to fetch http://ppa.launchpad.net/upubuntu-com/office/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found
E:Some index files failed to download. They have been ignored, or old ones used instead.
I have found several post on how to remove ppa's but they all require the ppa name. I know it might sound stupid, but I do not know what is the name of the faulty ppa.
Regards