Windows 8 and 8.1 Forums


Activate retail Windows 8.1 with Windows 8 Product key.

  1. #11


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by SteamGamer View Post
    Thats great news! Too bad there is no 8.1 Beta upgrade available under the Windows Update Area currently.
    BETA is in the MS App Store, but you need to reinstall for the RTM.
    https://www.eightforums.com/tutorials...d-install.html

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  2. #12


    Posts : 3
    Win 8


    Will this method work with reactivating with a non-Pro key after installing 8.1 Pro? (I have a legit 8.1 Pro MSDN key that I can use to install, but my OEM key that I want to activate is non-Pro..)


    And does anyone know if you will get a new product key when using the store-upgrade in october? I hope I will be able to reformat my computer without having to re-upgrade every time from 8 to 8.1..
    Last edited by cyberpet; 26 Sep 2013 at 04:40.
      My System SpecsSystem Spec

  3. #13


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Welcome to EightForums

    Quote Originally Posted by cyberpet
    Will this method work with reactivating with a non-Pro key after installing 8.1 Pro? (I have a legit 8.1 Pro MSDN key that I can use to install, but my OEM key that I want to activate is non-Pro..)
    You would need to use one of your five MSDN Windows 8.1 Core keys to install, than Activate with the old Windows 8 core key.

    And does anyone no if you will get a new product key when using the store-upgrade in october? I hope I will be able to reformat my computer without having to re-upgrade every time from 8 to 8.1..
    NO, new product key in October.
      My System SpecsSystem Spec

  4. #14


    Posts : 3
    Win 8


    Thank you!

    My mistake to write MSDN.. I only have one Pro-key for 8.1 from Dreamspark (former MSDNAA). But I found an install-key that someone published for Windows 8.1 core and that solved that problem.

    My second mistake is that the OEM-key I extracted a long time ago from my Win 8 installation to keep safe, probably is the install-key Samsung used for my laptop, and couldn't be used for activation.. So I had to reinstall Win 8 again so that it uses the key from my UEFI-bios, extract the right key with a keyfinder, and start the process all over again, but now it works! 8.1 activated with my legit OEM-key.
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  5. #15


    Posts : 23
    win 8.1 Pro (64-bit)


    I found that my Windows 8 Pro (64-bit) Product Key worked perfectly fine to activate Windows 8.1 Pro (64-bit). See my post here: https://www.eightforums.com/windows-8...-1-64-bit.html
      My System SpecsSystem Spec

  6. #16


    Posts : 3
    Win 8


    Quote Originally Posted by petesmst View Post
    I found that my Windows 8 Pro (64-bit) Product Key worked perfectly fine to activate Windows 8.1 Pro (64-bit). See my post here: https://www.eightforums.com/windows-8...-1-64-bit.html
    Did you run the upgrade from boot or from inside Windows 8? You mean only activation worked or did the installation also work with your old key?

    I am aware that it works to Activate with at Windows 8-key, but every way I try to install, I am asked for a Windows 8.1 key..

    I run Windows 8 Pro on a different computer with a Dreamspark-key, but when I run upgrade it will still not detect or accept the key I already used. I'm runnig the upgrade now to see if i can active later with the old key.
      My System SpecsSystem Spec

  7. #17


    Posts : 23
    win 8.1 Pro (64-bit)


    @cyberpet: I ran the upgrade by booting from the DVD (ISO). When asked whether I wanted to do a clean install or keep all my apps and data, I opted for the latter. I then sat back and let the proves run to completion. It took about 25 minutes (including 4 re-boots). (I had about 186GB of data on my 256GB SSD).

    By the way, I used the product Key of my EXISTING Windows 8.0 when asked to "enter your product key" very early in the install process. In fact, the process will not get underway without the product key being entered. After upgrading was completed, I went to "Control Panel", "System" and noted that my product was "activated" already (presumably because the upgrade had been carried out on a previously activated Widows 8.0)

    Users who will be upgrading to Win 8.1 by means of the update that will be made available from the Windows Store via Windows Update will obviously not need to enter a product key. Their already-activated Windows 8.0 will be sufficient to enable the upgrade to go ahead. I must assume that in this case only new Win 8.1 files that are required for the update will be downloaded and installed, rather than a full-sized Win 8.1 installation

    The size of the Win 8.1 installation ISO is nearly 3.8GB, so downloading it could be quite a "big deal" for many users.
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  8. #18


    Posts : 13
    Win 8 64bit


    Will the 8.1 from the MS Store/Windows Update be free of charge?
      My System SpecsSystem Spec

  9. #19


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Quote Originally Posted by awindowsdummy View Post
    Will the 8.1 from the MS Store/Windows Update be free of charge?
    YES, free of charge.
      My System SpecsSystem Spec

  10. #20


    I have 8.1 installed a week ago and just purchased a W8 pro OEM disc. Im to understand that I can change my registration to the key I purchased.

    So then what happens on Oct 18 when I already have the preview installed?
      My System SpecsSystem Spec

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Activate retail Windows 8.1 with Windows 8 Product key.

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