Windows 10: I Upgraded to Windows 10 Pro, Now It Won't Activate

Hello,


Today I've upgraded my pre-installed Windows 10 Home to Windows 10 Pro.

Now I can't activate it, the Activation Settings show error code 0xC004C003: we can't activate Windows on this device because you don't have a valid digital licence or product key...

Troubleshooting doesn't help. How can I fix this?

This is a really frustrating experience, since I paid 145 euros for the upgrade.

:)

 

iPhone won,t connect win 10 Pro

 

iPhone won,t connect win 10 Pro

 

Can't upgrade from Windows 10 Home to Pro

Hi Bill,

Thank you for posting your query in Microsoft Community. We apologize for the inconvenience caused and will assist you in the best possible ways.

I suggest you to download and create an installation media for Windows 10 Pro form the link provided below:

Download Windows 10

After the installation media is created, suggest you to upgrade to Windows 10 Pro from the installation media. When the upgrade asks for product key, enter the product key purchased for Windows 10 Pro. If it does not accept, suggest you to skip the activation
step. After the Operating System is installed, suggest you to activate by phone by following the steps below:

• Press “Windows key + R” and type “slui 4” and press Enter.
• Select the Region from the list and click Next.
• Call the Toll-Free number provided on top and can activate via phone.

Hope this helps. Keep us posted on the status for further assistance.