Windows 10 Is on 200 Million Devices — Here's How Microsoft Plans to Get the Next 800 Million By Scalper1 | March 25, 2016 0 Comment Scalper1 News Windows 10 logo. Image Source Microsoft Windows 10 is officially Microsoft ‘s fastest growing operating system ever. In January, Microsoft revealed that it had been installed on more than 200 million devices Scalper1 News Scalper1 News Related posts: Microsoft Corporation Shares Surge as Windows 10 Hits 110 Million Devices Microsoft Corporation's Windows 10 Is Setting Records Alphabet Inc. Should Fear Windows 10 Microsoft sets bold goal for Windows 10: 1 billion devices