Windows 8 and 8.1 Forums


Can I use win10 license to activate win8.1?

  1. #1


    Posts : 3
    Windows 8.0 core, Windows 10

    Can I use win10 license to activate win8.1?


    I got me a laptop which has Windows10 on it. For personal reasons, and I do not want to start an argument as to why I would want to "downgrade". Can I activate Windows 8.1 with my Windows10 license?

      My System SpecsSystem Spec

  2. #2


    Newport, South Wales, UK
    Posts : 542
    Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu


    Short answer - No

    Basically every licence is tied to a particular OS and type, Also OEM licences which are the type supplied with new hardware also have additional limitations. You would also have to source drivers for 8.1, which may or may not be available. There have sometimes been included downgrade licences available on previous OS versions( mostly to business, but sometimes to home users), these are not, as far I I know, being offered at all with Windows 10
      My System SpecsSystem Spec

  3. #3


    Posts : 3
    Windows 8.0 core, Windows 10


    Thank you for the insight.

    Would it be possible for me to install a 8.0 or 8.1 or even 7.0 ISO image from msdn using a temporary license,
    upgrade to 10, using my my valid license, then revert back to 7/8/8.1 which would then be valid? - I really do not know how this all works.
      My System SpecsSystem Spec

  4. #4


    Beloit, Wisconsin
    Posts : 125
    Microsoft Windows 10 Pro 64-bit


    Answer in short is that you will have to buy a new license in order to go down to 7/8/ or 8.1.
      My System SpecsSystem Spec

Can I use win10 license to activate win8.1?

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