Windows Update should be your first choice if you’d like to upgrade Windows 7 or Windows 8.1 to Windows 10.Īdvantages of upgrading using Windows Update: Solution 1: make sure you upgrade to Windows 10 using Windows Update. Here are some useful solutions to fixing error 0xC004C003. Should I Upgrade To Windows 10 – How To Decide? Please make sure you have a genuine copy of Windows. 0xC004C003 Windows 10 product key not working: you’ll see this if your digital license or product key isn’t valid.Please contact Microsoft ASAP if you are suffering from this. 0xC004C003 after hardware change: a hardware change could also lead to 0xC004C003 error code.The solution to fix it in this case is very easy: just wait for a while (maybe a couple of hours) and try to activate Windows 10 again. Microsoft error code 0xC004C003: this error could be caused if the activation server is busy.Performing an in-place upgrade is an easy fix on this occasion. 0xC004C003 Windows 10 not activated after upgrade: this error may occur when you haven’t finished Windows 10 upgrade correctly.It’s easy to run into 0xC004C003 error while you are trying to activate Windows. The most possible causes of error code 0xC004C003 are Windows 10 upgrade and fresh install. Then, I’ll share with you how you can fix Windows activation error. In this part, several common Windows activation errors will be introduced.

Why did this happen? How to fix windows activation error? What happens if Windows is not activated? Questions like these will be answered in the following content. The Windows activation error occurs frequently to stop users from activating Windows successfully. Why? It is because this will allow you to reactivate Windows via Activation troubleshooter when important hardware change is made. To be honest, linking the digital license to Microsoft account is crucial. Detect whether the number of devices running this copy exceeds the limit that Microsoft Software License Terms allow or not.Īfter installing a Windows system, you’ll be asked to finish the activation process: find out if your operating system (OS) is activated and linked to your Microsoft account.Verify whether your copy of Windows is genuine or not.What does activation mean? To be specific, Windows activation is used to: What Happens When Windows Is Not Activated.

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