Search notes:

Windows product key

A product key (or a digital license, called digital entitement in Windows 10) is needed to activate Windows.
The format of the product key is xxxxx-xxxxx-xxxxx-xxxxx-xxxxx (letters and numbers).
Microsoft claims that it does not keep a record of purchased product software keys.

See also

product id
Reinstalling the product key with slmgr.vbs.

Index

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