Since Microsoft doesn’t keep a record of purchased product software ... also use some free Software Key Finders to recover and save, not just Windows, but even Office, Software, Games serials ...
it's our favorite free product key finder. There are two versions of MyKeyFinder: free and paid-for. Both will find Windows and Microsoft Office product keys but the Plus edition will also scan ...
In Windows 11/10, the product key will probably be encrypted, tied to your Microsoft Account and stored ... not just Windows, but even Office, Software, Games serials and license keys.