There is always a little box checked, you have to uncheck it if you don't want the download at a lot of the dwld sites...using alosso's advice is the surest way to catch.....most ppl. miss it....
If you look at the resources those "paid" AV's use VS the free ones you would think differently(like playing a game)....I have 6 units protected with free on all of them, and no problem.....