Just two months after the release of Windows 10 and the operating system has already been installed on more than 100 million devices. This isn’t actually that surprising considering how not only were most Windows 7 and Windows 8 users given the ability to upgrade to Windows 10 for free, Microsoft went to annoyingly great lengths to convince people to get the update when they became eligible. It also helps that Windows 10 has been very well received, especially compared to the nightmare that was Windows 8.