Following the doc on this page: http://www.gluu.org/docs/admin-guide/deployment/ubuntu/ I did: # echo "deb http://repo.gluu.org/ubuntu/ trusty main" > /etc/apt/sources.list.d/gluu-repo.list # curl http://repo.gluu.org/ubuntu/gluu-apt.key | apt-key add - # apt-get update apt-get update returned the error: W: Failed to fetch http://repo.gluu.org/ubuntu/dists/trusty/Release Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file) I am on Ubuntu 14.04 LTS 64 bit.