Windows 10: Can't activate Windows "The product key was already used"

Discus and support Can't activate Windows "The product key was already used" in Windows 10 Gaming to solve the problem; Hi,I want to activate Windows with a product key I bought. I have installed Windows 10 several times on virtual drivein Parallel Desktop and VMware... Discussion in 'Windows 10 Gaming' started by pianist365, Mar 20, 2025 at 10:57 AM.

  1. PIANIST365
    pianist365 Win User

    Can't activate Windows "The product key was already used"


    Hi,I want to activate Windows with a product key I bought. I have installed Windows 10 several times on virtual drivein Parallel Desktop and VMware fusion in Macbook Air. Now I delete all virtual drives and use bootcamp to install Windows instead. And I can't activate Windows. It said that my product key was already used. I can't find the way to deactivate because I have already deleted all virtual drives. I have called microsoft and did enter installation key with the automatic response but it said I can't use this activation.How can I solve the problem?

    :)
     
    pianist365, Mar 20, 2025 at 10:57 AM
    #1
Thema:

Can't activate Windows "The product key was already used"

Loading...

  1. Can't activate Windows "The product key was already used" - Similar Threads - Can't activate product

  2. Can't activate Windows "The product key was already used"

    in Windows 10 Software and Apps
    Can't activate Windows "The product key was already used": Hi,I want to activate Windows with a product key I bought. I have installed Windows 10 several times on virtual drivein Parallel Desktop and VMware fusion in Macbook Air. Now I delete all virtual drives and use bootcamp to install Windows instead. And I can't activate...

  3. Can't activate Windows "The product key was already used"

    in Windows 10 Updates and Activation
    Can't activate Windows "The product key was already used": Hi,I want to activate Windows with a product key I bought. I have installed Windows 10 several times on virtual drivein Parallel Desktop and VMware fusion. Now I delete all virtual drives and use bootcamp to install Windows instead. And I can't activate Windows. It said that...

  4. Windows Will Not Activate. Product key already in use.

    in Windows 10 Gaming
    Windows Will Not Activate. Product key already in use.: I just got this computer and downgraded it to Windows 10. Now, it states Windows was already active on another computer. How do I get the product key to change it or otherwise fix?...

  5. Windows Will Not Activate. Product key already in use.

    in Windows 10 Updates and Activation
    Windows Will Not Activate. Product key already in use.: I just got this computer and downgraded it to Windows 10. Now, it states Windows was already active on another computer. How do I get the product key to change it or otherwise fix?...

  6. Windows Will Not Activate. Product key already in use.

    in Windows 10 Software and Apps
    Windows Will Not Activate. Product key already in use.: I just got this computer and downgraded it to Windows 10. Now, it states Windows was already active on another computer. How do I get the product key to change it or otherwise fix?...

  7. activation key was already used

    in Windows 10 Software and Apps
    activation key was already used: activation key was already used https://answers.microsoft.com/en-us/windows/forum/all/activation-key-was-already-used/b4246e03-69de-4926-9091-83161bc5c409

  8. activation key was already used

    in Windows 10 Installation and Upgrade
    activation key was already used: activation key was already used https://answers.microsoft.com/en-us/windows/forum/all/activation-key-was-already-used/b4246e03-69de-4926-9091-83161bc5c409

  9. Can't activate Windows because "the product key was already used on another device".

    in Windows 10 Installation and Upgrade
    Can't activate Windows because "the product key was already used on another device".: I don't know what else to say here. I recently got the latest version of Windows 10 and I haven't had Windows 10 activated for a while. After resetting for the first time which was a year ago, I found that I was unable to activate windows again on this device because it was...

  10. Already used product key

    in Windows 10 Gaming
    Already used product key: I bought an key for an Mircosoft product and when I wanted to use it it said it was already used. And if I want my Money back they said I have to know when the key was used. How do I find out [moved from German forums]...