https://www.windowscentral.com/software-apps/windows-11/microsoft-kills-loophole-that-let-windows-7-keys-activate-windows-11-and-10"
What you need to know• Microsoft is closing the loophole that allowed older Windows product keys to activate Windows 10 and Windows 11.
• This loophole has existed since Windows 10 first launched as a "free" upgrade for Windows 7 and Windows 8 users.
• That free upgrade was supposed only last a year, but remained open and worked with both Windows 10 and Windows 11 until now.
• Windows 10 keys will continue to work on Windows 11."
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