I manage a large network of Macs, and for various reasons do not want to upgrade from Yosemite to El Capitan. We have automatic updates turned on on all of our systems, and I'd like to keep it that way. However, many of my users are confused or annoyed when their computer keeps reminding them to upgrade to El Capitan when the IT departments policy is to stay on Yosemite (for app compatibility reasons). I've been searching for weeks now trying to find a way to prevent the El Cap upgrade reminder from popping up that doesn't also involve completely disabling automatic updates. It's possible to tell softwareupdate to ignore certain updates via the command line, but El Capitan doesn't show up when running $softwareupdate -list Does anyone know how to do this without turning off all updates?