Installing fresh Windows 11 on a new SSD, old Windows 10 product key not activating new install...

[Microsoft Windows]

Hi all, I've installed a new SDD (Call it "B") on my machine and have installed Windows 11 (Using the media creation tool), all successfully. The original SDD (Call it "A") is still in the machine (Where my Activated Windows 11 is originally installed to) During the Windows 11 Installation on SDD-B, I was asked to enter my Product Key, which I did, with the result "This Key works!" however, once finally in windows, I have the "Windows is not Activated, please activate windows" prompt. In the Activation settings window, I re-enter my Product Key and get an error code. A bit of background - My O

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