A single product key is meant to be used on a single PC. Note:Make sure you are not using the same Windows 10 product key on more than one computer. Please perform the steps provided below to learn how to fix Windows 10 activation error 0xC004C008. Like the above user, there are many Windows 10 users who are not able to activate Windows 10 due to an error “We can’t activate Windows on this device because product key was already used on another device”. Start Menu and Taskbar Icons Not Responding on Windows 10.Steps to Fix Windows 10 Activation Error Code 0xC004F034, 0x803F7001 and 0x800704CF.What number can I call to or how can we solve this? I need the association to that VM that doesn’t exist anymore removed and being able to activate it on this proper installation. I suspect that the issue is that once I activated on a virtual machine on Ubuntu, but now that virtual machine is gone and I’m running a proper installation on Windows and need to activate it. I have a legitimate key associated with my Lenovo notebook. Let’s start with a real-life scenario:Ĭan’t Activate Windows 10 0xC004C008, I’m not able to activate Windows. Are you receiving Windows 10 Activation Error 0xC004C008? Are you not able to activate Windows 10 on your brand new PC? Do not worry, today in this post I will provide a few simple steps to fix Windows Activation Error 0xC004C008.

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