Microsoft kills loophole that let Windows 7 keys activate Windows 11 and 10

When Windows 10 first launched back in 2015, Microsoft also made the OS a free upgrade for all Windows 7 and Windows 8 users who did so within the first year of its release. After July 29, 2016, that offer expired, and Windows 10 was no longer a free upgrade... except, it was.

Even though Microsoft said the upgrade offer had expired, users found that they could still upgrade from Windows 7 and Windows 8 to Windows 10 without needing to buy a new product key. In fact, Windows 10 would accept Windows 7 and 8 keys with no question asked.

When Windows 11 rolled around in 2021, those older Windows 7 and Windows 8 keys continued to work, likely because under the hood, Windows 11 was just Windows 10 with a fresh coat of paint. But now, as we move into the next era of Windows, Microsoft is closing that loophole.

Announced today, older Windows 7 and Windows 8 keys will no longer activate Windows 10 or Windows 11. This change is already in effect with the latest Windows Canary preview builds, which are testing the next major version of the Windows client due out next year.

As of right now, these older keys still activate the production builds of Windows 11, but it's unclear how long that will remain. Microsoft says Windows 10 product keys will still be able to activate Windows 11, as long as you're using Windows 11 on an eligible PC that officially supports the newer OS.

:story: Windows Central