I just purchased another Vipre Antivirus program for my new computer. I have been using Vipre now for quite a few years and have never had a problem of any sort except to love it more and more. This is my third computer to install it in and I also purchased one for my son as a present. He also loves it. Once you buy it you have it for life. They do the upgrading, you do nothing. How simple is that? If you should have a problem installing it, you can call them 24/7. It's Great!