AVAST has tried to install GF on my ASUS G20 with Win 8.1 and said GF is not compatible with my computer. They are implying that it is MY computer and not all Win 8.1. I must not understand today’s software world. I thought it is the responsibility of the software developer to have the product compatible with the systems. I like the AVAST products but need to look for an alternative to GF.