Microsoft said they'd end support for Windows XP and they went and did it. A lot of people thought they'd delay it yet again, but this time it's real. No more support. (Unless, of course, you want to pay Microsoft a truly exorbitant amount of money.) Now you're faced with making a decision about what to do with your Windows XP PCs. We've been asked by several customers if using anti-virus software is a solution for the lack of support from Microsoft.