Windows 10: Using Windows 10 product key to activate Windows 8.1

Discus and support Using Windows 10 product key to activate Windows 8.1 in Windows 10 Installation and Upgrade to solve the problem; Hello, I'm just wondering if I can use my Windows 10 Home product key to activate Windows 8.1. I recently started using Windows 8.1 in a Virtual... Discussion in 'Windows 10 Installation and Upgrade' started by abylol, Jul 29, 2020.

  1. ABYLOL
    abylol Win User

    Using Windows 10 product key to activate Windows 8.1


    Hello,

    I'm just wondering if I can use my Windows 10 Home product key to activate Windows 8.1. I recently started using Windows 8.1 in a Virtual Machine and I really like it and I want to downgrade my main machine from Windows 10 to Windows 8.1. Problem is that I don't own a Windows 8.1 product key and my machine originally came with Windows 10. I just want to know if I can use my Windows 10 License on Windows 8.1.

    :)
     
    abylol, Jul 29, 2020
    #1
  2. FX-GMC
    FX-GMC Win User

    Windows 8.1 pro + WMC key activation

    This worked for me last time with a Win 8 key.

    Install Windows 8.1 and enter KMS key during setup. Once in windows change product key to my Windows 8 key. Go to add features and enter my WMC add-on key. Drink a beer to a job well done.
     
    FX-GMC, Jul 29, 2020
    #2
  3. FX-GMC
    FX-GMC Win User
    Windows 8.1 pro + WMC key activation

    KMS Keys: Appendix A: KMS Client Setup Keys

    Windows usually activates as soon as you change the product key from the KMS key to your Windows 8 key. You are then free to either enter your WMC key or not.
     
    FX-GMC, Jul 29, 2020
    #3
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Using Windows 10 product key to activate Windows 8.1

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