On April 8, 2014, Microsoft discontinued support for Windows XP. While you can still use it, Microsoft may no longer support it with security patches and updates. For many industries, this is a deal breaker. Welcome to Windows 8.1. If you’re a little disoriented by the new appearance of your Window’s operating system, Microsoft Certified Trainer Melissa Esquibel provides some valuable pieces of information that will help you make the transition.