win7/win8.1 is the key required to reload the system after upgrading WIN10?

win7/win8.1 does the reload system require a key after upgrading Win10? win7/win8.1 users can upgrade for free in the first year after the Win10 release. So does the win7/win8.1 upgrade WIN10 require a key to reload the system? The following small Lego for you to introduce!

Because the system is running for a period of time, because of various reasons, often need to reload. Do you need to install win7/win8.1 and upgrade to WIN10 at this point as you upgraded? And if this problem occurs in a year after the Win10 release, does the reload system need to pay?

Gabriel Aul, the head of the Microsoft Win10 Preview experience, answered the user's questions on Twitter today, saying that once a user's device has been upgraded to WIN10, it's free to reload at any time. Then, the user to Win8.1 as an example, asked the owner of his own Win8.1 account is still valid in Win10.

In response, Gabriel aul that the Win8.1 key is not needed at all. For devices that have been upgraded WIN10, installing WIN10 again will be reactivated.

Although the person in charge only used Win8.1 for example, according to his "for once upgraded WIN10 equipment, again installed WIN10 will reactivate" words to analyze, this policy for Win7 users should also apply.