Why my Windows product key changing after I activated Office?

[Bálint Tibor Kelecsényi]

I just get an Office product key using Tisztaszoftver, but it changed my Windows product key and the version from Pro to Enterprise. After I deinstalled Office and changed the product key back, it seemed good, but seconds later, product key changed to the Enterprise version.How can I change the my product key back to Pro version without automatic change?

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