Trying to activate Windows 11 with Windows 8.1 Retail Key...

[Istanbul Kop.]

Hi,I installed a fresh copy of Windows 11 on my Valve Steamdeck. I didn't activate during installation as I intended to activate later via the settings menu.I have a brand new version physical retail packaged version of Windows 8.1, I bought this many years ago from a reputable bricks and mortar store - but I never opened or used the key. I have just opened the sealed package today.I was told I could activate my Windows 11 with the Windows 8.1 key I have....but I get this error; 0xc004f050What can I do?Thanks.

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