1.    01 Aug 2015 #1
    Join Date : Oct 2014
    Posts : 10
    Windows 10 Professional

    Windows 10 Key after upgrading from Windows 8

    I have been subscribed to the insider preview and had all the builds of Win 10 as they have been released when Win 10 went RTM I unsubscribed and installed Win 8 Pro and registered using my legit Win 8 Pro key afterwards I upgraded to Win 10 RTM from Microsoft updates and after activation I expected a new Win 10 key - in fact after activation the key is the generic key I was using for the preview builds but Windows is permanently activated, anybody else noticed this?
    When I upgraded my other computer which was running licensed copy of Win 8 and had never been used for the insider program I got a new Windows 10 key after upgrading, however when I reinstalled Win 8 on the machine that had previously been used on the insider program and then upgraded to Win 10 I did not receive a new key - its the same key that I have been using whilst running Win 10 Preview!
    So why do I get a new key on the machine that never was on the insider program and the machine that was stays with the generic key?
      My ComputerSystem Spec
  2.    01 Aug 2015 #2
    Join Date : Jul 2015
    Posts : 57
    Desktop : Windows 10 RTM (Upgrade) Daily Driver: Windows 8.1 Pro + OS X 10.10.4

    It's not the key that matters. Each motherboard has a unique ID, and Microsoft determines the activation state by checking that ID.
    So, once you upgraded from Windows 8/Windows 10 Insider to Windows 10 RTM, the OS will auto-activate itself each time you reinstall Windows 10.

    Long story short, no, you won't get a unique key for upgrade.
      My ComputerSystem Spec


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