Even you still believe in Bitcoin, you might be one of the remaining few. Even some of its biggest backers have thrown in the towel. Following this latest trend, Microsoft is also closing the door on it. Unlike the somewhat big announcement it made more than a year ago, Microsoft has rather silently adjusted its pages to let you know that you can no longer do business in the Windows 10 and Windows 10 Mobile stores using Bitcoin. A small but still significant blow to the beleaguered cryptocurrency.