So, if you upgraded when Windows 10 was released and downgraded shortly after, you're still eligible to upgrade to Windows 10 for free. Once you've performed the upgrade once, your PC has a Windows 10 license forever. You can also still install Windows 10 and enter a Windows 7 or 8 key in the installer to receive a free Windows 10 upgrade license. Upgrade from Windows 7 or 8: Microsoft still offers a free Windows 10 upgrade to PC users who use accessibility tools.There are a variety of ways you can get a Windows 10 license for your PC, and many of them are still free. Related: All the Ways You Can Still Upgrade to Windows 10 for Free
