Windows Activation

Yesterday, we reported that Windows 10 is experiencing activation issues on multiple systems. It’s not known how many users were impacted by this bug and while several reports have surfaced online over the past few hours, it appears that Microsoft has already deployed the fix.

The error in the question looks like the below message:

“We can’t activate Windows on this device because you don’t have a valid digital license or product key. If you think you do have a valid license or key, select Troubleshoot below. Error code: 0xC004C003.

How to fix error 0xC004C003 and reactivate Windows 10

Microsoft has provided very little details on what exactly happened and what caused the problems but it appears to be a server glitch that has already been fixed.

If you’re still experiencing the problems, simply fix the activation error by following the below steps:

  • Open the Settings page from the Start menu.
  • In the Settings app,¬†Navigate to Update & Security > Activation and click the troubleshooter option.

Windows will connect to the servers, reverify the license and your Windows 10 device will be reactivated. There is no need to reset or contact Microsoft if this doesn’t work. The fix is rolling out and everything will return back to normal in few hours even if you don’t manually click on troubleshooter link.

About The Author

Mayank Parmar

Mayank Parmar is an entrepreneur who founded Windows Latest. He is the Editor-in-Chief and has written on various topics in his seven years of career, but he is mostly known for his well-researched work on Microsoft's Windows. His articles and research works have been referred to by CNN, Business Insiders, Forbes, Fortune, CBS Interactive, Microsoft and many others over the years.