https://www.techpowerup.com/229098/l...r-offer-expiry

Regret not taking advantage of the free upgrade offer to Windows 10? A loophole in the Windows 10 Free Upgrade offer lets you freely upgrade your Windows 8.1 and Windows 7 installations to the latest Windows 10, five months after the free upgrade offer expired. Apparently, Microsoft is keeping the free upgrade offer open to people who use assistive technologies. These could include people who use screen narrators or magnifiers. You can now simply head over to Microsoft Accessibility website, and on checking an undertaking that you do use assistive technologies, avail the free Windows 10 upgrade. Microsoft reportedly isn't checking if you actually use these features.