Where do I download the 2016 version of Norton Security. Had this problem last year from 2014 to get version 2015, and had to uninstall then install again, then noticed that 2015 version had been downloaded. In the past this feature was offered either as an automatic update or you could do it yourself anytime, the latest versions were available from late November to early December, but now cannot find how to do this. I've still got over a months subscription before I need another key.