Solution for Windows 10 Upgrade Error Code 0xc004c003

This error i.e. Windows 10 Upgrade Error Code 0xc004c003 that you are getting is a windows activation error, meaning either you are trying to upgrade from that version of Windows OS that Microsoft doesn’t allow upgrade from or your OS can be OEM software, that is why you are facing this problem. In OEM OS user can print as many no. of copies as they can but these copies lack some privileges that is generally given to original copies.


{Compatible with Windows 8, 7, XP, ME, Vista, 98, 2000 (32/64)
File Size: 4.9MB Download Time: <(dsl, 2sec, dialup 2min)>}

Sometimes users try to find the key of pre-installed Windows OS i.e. giving Windows 10 Upgrade Error Code 0xc004c003, which come as factory installed, using third party key finder and end up formatting their drive then try downloading form the original site and end up with this error. So, make sure you aren’t using any such software because it is kind of like using pirated version.

Symptoms –

  • You are getting notifications to upgrade to Windows 10 but it is not working.
  • You have lost your key that came with you previous version of Windows OS.
  • You weren’t aware of what kind of software you were using.
  • Most of the times Copies of original is distributed as genuine OS.

Causes –

  • Anyhow it will stop you from using or upgrading to the latest Windows 10.

Solution –
If you upgraded to Windows 10 Pro for free from an earlier version of Windows OS then try using these steps.

1.Select Start > Settings > Update & Security > Activation

2.If activation status is “Connect to the Internet to activate Windows” then select Activate to manually activate it.

3.If your activation status is “Windows is not activated” it might mean that you didn’t upgrade to Windows 10 before reinstalling.

4.If this is the case, you have to buy genuine Windows 10 from the Store to activate it successfully or go back to your previous version of Windows and then use the free upgrade offer to Windows 10.

5.If you have a valid product key, you can use it to activate Windows:

  • Select the Start button, then select Settings > Update & security > Activation.
  • Select Change product key, and then type the 25-character product key.

Hopefully this will help you deal with Windows 10 Upgrade Error 0xc004c003.If you are a new user you should understand that finding genuine software is very difficult and can be very costly. You will have to purchase the same Windows OS twice if you have lost your key as well as the OS. To, save you from all this it is advisable for you to use Advanced System Repair Tool.


{Compatible with Windows 8, 7, XP, ME, Vista, 98, 2000 (32/64)
File Size: 4.9MB Download Time: <(dsl, 2sec, dialup 2min)>}

This not only helps you with Windows 10 Upgrade Error Code 0xc004c003 but also scans and cleans the system and makes sure that the software you are using is genuine or not. It makes you available the list of all faulty softwares. This helps and save you from using third-party key recovery tool which might not be recognized as an effective tool for it.


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