How to find product key after Upgrade windows 7 to windows 10 - Microsoft Community

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i upgrade windows 7 10 how can find product key preservation can use news installation ?

unfortunately don't have windows 7 product key.

when upgrade windows 7 or windows 8, don't product key.

when upgraded previous version of windows or receive new computer preinstalled windows 10, happened hardware (your pc) digital entitlement, unique signature of computer stored on microsoft activation servers. windows 7 or windows 8 genuine license running exchanged diagnostics key.

anytime need reinstall windows 10 on machine, proceed reinstall windows 10. automatically reactivate. you prompted enter product key couple times through installation, click don't have key , later.

there no need know or new key, if have issues digital licensing or activation troubleshooter, can utilize existing windows 7 or windows 8/8.1 product key you ownto reactivate if necessary. or use reset function in windows 10.



Windows / Windows 10 / Install, upgrade, & activate / PC



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