I want to go back to the device's license key, but when I go to activate and enter the correct key, the machine gives an error 0xc004f050
Hello @ThnhtNguyn-4673 ,
Thanks for using Microsoft Q&A forum.
I understand you are having some issues with your Windows 10 product key. I hope you might have look at "Get help with Windows activation errors" , if not then I would recommend you to refer.
In addition to that you can always ask windows community forum for KMS or activation related question or Get help from support.
Hope this helps.
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