Windows activation error code c004c003, suddenly

Question

Hi

I'm running normally in Win 10 for the last couple of years and purchased a Win 10 pro license in Microsoft Store (there's a valid purchase history) from 2016, but yesterday, win 10 tell me that the windows im running is not activated. And since the pro license is purchased in Microsoft Store, the product key is not emailed to me or something, rather it's entered automatically into the system, there shouldn't be and hadn't been any problem. 

But since this occurred, I would like to get help on how to either get my purchased key back, or directly reactivate windows.

Please don't spam this thread with solution that can be found in Google, tried, not working, and the customer service line is always busy and robots are not helping at all.

Thanks!

Answer 1

Hello,

It's a known issue and now appears to be fixed for some users.

Please run Activation Troubleshooter and check:

https://www.kapilarya.com/how-to-use-the-window...

Let us know if it's resolved for you!

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Answer 2

Thanks!

I just saw that thread too hopefully this will get resolved soon.

Answer 3

Hi Yuhao. I'm Greg, an installation specialist and 9 year Windows MVP, here to help you.

Statement from Microsoft on this:

Microsoft has just released an Emerging issue announcement about current activation issue related to Pro edition recently. This happens in Japan, Korea, American and many other countries.I am very sorry to inform you that there is a temporary issue with Microsoft's activation server at the moment and some customers might experience this issue where Windows is displayed as not activated.

Our engineers are working tirelessly to resolve this issue and it is expected to be corrected within one to two business days

I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.