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In fact, Windows 10 would accept Windows 7 and 8 keys with no question asked.
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.
The installation path to obtain the Windows 7 / 8 free upgrade is now removed as well.
Upgrades to Windows 11 from Windows 10 are still free."












