When Microsoft released Windows 10 in 2015, it offered the new operating system as a free, no strings attached upgrade for anyone still running a supported, fully activated previous version of Windows. That offer was only supposed to last for one year, but Microsoft quietly kept its activation servers running for more than eight years, granting free digital licenses to Windows 10 on hardware originally licensed for use with Windows 7 and Windows 8.1. That loophole officially closed on September...
