How to Fix Windows 10 Upgrade Error Code 0xc004c003

Microsoft’s free upgrade to Windows 10 sometimes doesn’t seems to be free at all because of a lot of problem that it is causing in the old system machines. This is mostly due to the stringent EULA Policy of the Microsoft’s. Were the company is more interested in saving its own rights than the customers gratification. Most users have complained about this but it couldn’t be resolved because of the clash of interest of the two parties and any compromise on the part of Microsoft might result in loss of revenues.


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

Therefore, the middle path suggested by Microsoft is to not go for a clean install of Windows 10 rather upgrade to it first then get it registered and then get an ISO file Installation Media made for future use. All the methods listed in here are manual methods and therefore consult someone if you are not so sure about it.

You could also look to use Advanced System Repair Tool for all your Windows OS based errors.

Symptoms –

A message with windows error code is displayed on the screen e.g. Windows 10 Upgrade Error Code 0xc004c003.

Causes –

  • Upgraded from an inactivated Windows OS
  • Used a product key not meant for Windows 10 Upgrade
  • Performed a clean install instead of first upgrading using the previous Windows OS

Solution –

Method 1. If you upgraded to Windows 10 for free and ended up in a non-activated state, try following these steps:

  • Select the Start button, then select Settings > Update & security > Activation.
  • If your activation status is Connect to the Internet to activate Windows, select Activate to manually activate Windows.

Method 2. 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.


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

Hopefully the above methods did help you if it didn’t then try using Advanced System Repair Tool. This tool will help you to resolve the problem automatically after it scans your system and finds out the true cause of your problem. Also, it will help you to scan and clean the system of viruses and repair damages due to corruption automatically. It will also act as a data controller and optimizer tool for your system.


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