Unfortunately, my computer is Windows 8.1 and I am using FF latest version BUT I have had so many pop up ads using FF even though I have it set up to not get these. It is soooo annoying.
When I used IE version 11, I don’t get these pop-ups.
I am using Waterfox (64 bit Firefox) and like it. My backup browser is Comodo Dragon. Installed Ghostery on both.