If this scenario is applicable, you should be able to resolve the issue by updating your Windows build to the latest via WU.
In this case, you should be able to resolve the issue by finding and re-entering the correct product activation key or by contacting Microsoft Support.
There’s also user speculation that the product key might change when converted to a digital license, which might end up causing this issue. The license Product key is incorrect – As it turns out, this particular issue can also occur due to an incorrect license product key.