Norton 360 will not allow latest Windows install for Appup Center to be installed. Considers Appup a threat and removes the install file
that was downloaded. The version is 3101 on the file name. It only says it is considered a threat by reputation point via the "Community".
You may already know about this. This does not block the automatic updates just the users trying to download Appup install.
Still a bug issue if folks can not download and see the threat designation.