It turns out that everyone that called BS on Microsoft's prediction that Windows 10 would be installed on a billion devices by 2018 were right. The company has admitted that it most likely will not hit the billion mark by mid-2018, placing some of the blame on its phone hardware business. "Windows 10 is off to the hottest start in history with over 350M monthly active devices, with record customer satisfaction and engagement. We're pleased with our progress to date, but due to the focusing of our phone hardware business, it will take longer than FY18 for us to reach our goal of 1 billion monthly active devices. In the year ahead, we are excited about usage growth coming from commercial deployments and new devices - and increasing customer delight with Windows."