Enlarge (credit: Microsoft) Here at Ars, we’ve been around long enough to chronicle every single time that Microsoft has tried to get Windows running on Arm-based processors, instead of the Intel and AMD-made x86 chips that have been synonymous with Windows for more than three decades. The most significant attempts happened in 2012 with Windows RT, which looked like Windows 8 but couldn’t run any x86 Windows apps; and in 2017 when Windows 10 Arm PCs arrived with rudimentary x86 emulation. The main PC company backing each of those Arm efforts was Microsoft itself, which launched the original Surface to showcase Windows RT and the first Surface Pro X during the Windows 10 era.