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How to fix Error 0xc004f050

That error code means your PC system version is not windows 10 Pro
For using the key, need to install windows 10 Pro system first
then the key will works

You can download and install windows 10 Pro from https://www.microsoft.com/en-us/software-download/windows10

The follow tips may help, if you do not know how to download and install.

How to Install Windows 10 From a Bootable USB Drive