I bought this and tried to install it on a new laptop (Windows XP). After several failed attempts to install, I called "tech" support. 12 hours later, after I had talked to 5 different techs, 2 of whom used remote access to download a bunch of programs onto my computer, and both of whom just disappeared with no solution in sight, I gave up. The last guy actually texted me, before he disconnected, "Please don't call us, we'll call you."I was able to download and install AVG with no muss, no fuss, and no cost. Norton is being returned.