Is this a genuine Microsoft Product?

Office Professional 2021 is a volume licence version of Office used by large organizations, that is not a correct home consumer Office licence.

Most likely you would not be able to activate that licence, and even if you are able to activate the licence, it would automatically deactivate later and you would not be able to reactivate that Office licence because it is not a correct home user licence, my advice is to not purchase that licence.

Hello @RT

Be cautious with that listing. A very low price doesn't prove the product is counterfeit, and an Amazon listing alone isn't enough to verify the licensing source.

Also, make sure you distinguish Office Professional 2021 from Office Professional Plus 2021. They are different licensing products; Professional Plus is commonly associated with organizational/volume licensing rather than ordinary consumer retail licensing.

Microsoft specifically warns that product keys sold separately through third parties can be stolen, abused, or otherwise used without authorization. Such keys can sometimes activate successfully at first and later be blocked, so successful activation alone isn't proof the license is genuine.

If you want a one-time-purchase (“lifetime” for that version, not lifetime upgrades) Office license, buy from Microsoft or a reputable authorized retailer, and verify exactly which Office edition and license type the seller is providing.

Reference: Microsoft Support - Using Office product keys and safer purchasing guidance

So I wouldn't call that particular Amazon offer genuine or counterfeit without verifying the seller and license, but the combination of an unusually low price and Professional Plus/standalone-key licensing should definitely be treated as a warning sign.

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