COA stands for Certificate of Authenticity. See https://www.microsoft.com/en-us/howtotell/software-packaged
What does it mean: COA Barcodes?
What does it mean: COA Barcodes on Windows 10 pakeg ?
Windows for home | Windows 10 | Licensing and activation
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Suzanne S Barnhill 277.1K Reputation points MVP Volunteer Moderator2024-07-11T01:48:46+00:00 I don't believe you're meant to use those numbers. Instead, follow the directions that are partially obscured by the price sticker on the package. Since this appears to be OEM software, it should have been installed already by the laptop manufacturer or reseller.
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