Windows 10: Digital license no longer working

I have been using my computer for a few years now. I just got an error code: 0xC004F012 saying it doesn't have a valid digital license. I have not updated or changed my computer in any way. How do I proceed?

I don't even know where my product key is at this time

:)

 

Digital license

Thats how licensing works with Windows 10, the digital license is attached to your Microsoft Account and makes it easy to reactivate Windows 10 in the event you reinstall it.

Learn more:

• Use a Digital
  License to Manage and Activate Windows 10

 

Digital License renewal

My problem is this: after replacing the motherboard I couldn't reactivate Windows 'after hardware change', it just gave me error all the time, and as a last resort I tried removing my PC from the list of 'My devices' in Microsoft account. Well, now I know
that was stupid because Microsoft now thinks I no longer have that PC and my digital license does not support changing the PC.

So, can my digital license be restored? Could I have any official answer here because person on the phone gives a very strange response that while I don't have a product key they can't help me. As if he/she never heard of digital license while working for
Microsoft official support.

 

digital license

Thanks for your suggestion. I solved the problem with my License Key with Belarc Advisor Software. The Digital License code was a numeration that Microsoft Corporation has given to all that have Windows Account specially to those that has free upgraded
to Windows 10. Under the Digital License appears the original code.