If a Windows 10 Insider Preview user need to re-install from scratch the final windows 10 pro on the same computer what serial need to use? Are the Insider Preview credentials logon enough? I cannot find info on this case online.


You will need to buy a license. Only windows 7 and windows 8 users are eligible to apply for the free upgrade.

If you have an old windows 7 or 8 license, install that windows first, then use the upgrade function to register your hardware ID. This should allow you to install windows 10 in the future without a problem.

  • May I ask if you have a link to an official documentation about that? thanks. – C.B. Jul 31 '15 at 7:38
  • My collegue who was running windows insider was unable to install and needed a key. He used one of our MSDN license keys as there was no other way. This is not a link, but experience. The rest is accumulaetd through various answers here on SuperUser. – LPChip Jul 31 '15 at 8:24

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