Windows 10: Windows 10 Pro product key won't activate.

Discus and support Windows 10 Pro product key won't activate. in Windows 10 Installation and Upgrade to solve the problem; My Windows 10 Pro upgrade key is a genuine retail copy. When I entered the code once, it finished the "preparing to update" section and then gave me... Discussion in 'Windows 10 Installation and Upgrade' started by martinaldwinckle, Oct 4, 2021.

  1. MARTINALDWINCKLE
    martinaldwinckle Win User

    Windows 10 Pro product key won't activate.


    My Windows 10 Pro upgrade key is a genuine retail copy. When I entered the code once, it finished the "preparing to update" section and then gave me the error code 0x0800f0805. I have tried re-entering the key and other "solutions" but it will not work. Any help please? Also, I checked and the key is still considered valid

    :)
     
    martinaldwinckle, Oct 4, 2021
    #1
  2. TIGGER
    tigger Win User

    Windows 8.1 pro + WMC key activation

    So it will be fine installing 8.1 pro with a KMS key, then switch to my 8 pro key and it will activate ok?

    Maybe a daft question but why can't you just install 8.1 pro with the 8 pro key, or is it different keys for 8 and 8.1? seems silly when 8.1 is a free update anyway.
     
    tigger, Oct 4, 2021
    #2
  3. 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, Oct 4, 2021
    #3
  4. NAVYLCDR
    NavyLCDR Win User

    Windows 10 Pro product key won't activate.

    Windows 10 product keys and activation - and the KMS angle

    Changing the product key to the generic Windows 10 product key will reset activation to the standard retail channel for activation. It might just activate (if there was a previous digital license for Windows 10 for that computer established with Microsoft). Once Windows 10 is back on the retail activation channel, then more than likely changing the product key to the Windows 8 product key using the same method may work.
     
    NavyLCDR, Oct 4, 2021
    #4
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Windows 10 Pro product key won't activate.

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