License keys for Windows 7, 8 and 8.1 can be used to activate a new copy of Windows 10 Creators Update, even if Microsoft has "officially" discontinued the free one upgrade for Windows 10 from summer 2016.
Αυτό σημαίνει ότι όσοι χρήστες θέλετε να ενημερώσετε το λειτουργικό σας σύστημα από τα Windows 7, 8, και 8.1 στην τελευταία έκδοση των Windows 10 δεν χρειάζεται να αγοράσετε key new license to activate the new Windows OS, nor do you need to have upgraded your old Windows before the summer of 2016.
All you have to do is install a new copy of Windows 10 Creators update and type the old Windows 7, 8 or 8.1 license key and enjoy your new operating system.
Informally, when Microsoft launched Windows 10, it allowed users of earlier Windows versions a one-year grace period where you could upgrade them to Windows 10 for free. at the end of this time the users found that Microsoft did not disable this feature and that they were still able to perform a clean installation of Windows 10 using the license keys of the earlier versions.
Microsoft has, in fact, never blocked the upgrade mechanism and has remained so even now with its coming new version of Windows.
However, this does not mean that this solution is legal to get Windows 10, nor does it mean that Microsoft will not prevent or cause you any problems in the future.