Four weeks after launch, Windows 10 is already on 75 million PCs and tablets

Microsoft is well on the way to achieving its goals with Windows 10, as the company boasts of more than 75 million installs in four weeks. The statistic was revealed by Yusuf Mehdi, Microsoft's corporate vice president of marketing for Windows on Devices. Mehdi noted that more than 90,000 unique PC and tablet models have seen the upgrade, including some PCs manufactured eight years ago. The adoption rate is nearly twice that of Windows 8, which sold 40 million licenses after about a month. Micro...