If your company has one or more of millions of PCs still running Windows XP, your options are collapsing around you rather quickly, making it more important than ever to finally get around to upgrading to a more current OS.
Microsoft formally ended all support for XP last year, and now Google has decided to follow suit, with no additional security patches available for machines running Windows XP. Currently, if you plan to keep using the aging OS, the only web browser still offering support for the platform is Firefox.