How to fix Windows Install Upgrade Error Code 0xC004F061

According to Microsoft’s policy of EULA user must have a previous version of Windows OS pre-installed before installing Windows 7 or 8 or any of their upgrades. For users who didn’t have a Windows OS previously will have to buy two Windows OS before thinking to upgrade to Windows 8 or 10.


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

When you get this specific error Windows Install Error Code 0xC004F061, Windows Upgrade Error Code 0xC004F061, this means that the key you are using can only be used for upgrades and not for clean install. So, now you can clearly understand that Microsoft’s free upgrade is not free at all.

But you still think that the key you have is genuine and is for clean install as well and not only for upgrades then you could proceed further on how to resolve this issue of; Windows Install Error Code 0xC004F061, Windows Upgrade Error Code 0xC004F061.

Symptoms –

“The following failure occurred while trying to use the product key – Code 0xC004F061”

Causes –

  • The cause could be using counterfeit software unknowingly.
  • Microsoft’s SLS permits only a limited no of users and copies of it Windows OS.
  • Sometimes hardware changes can also derecognize a system considering it to be another system in which the copy is being used of its original Windows OS.

Solution –

  • Click open “Command Prompt (Admin)”.In command prompt window type “regedit” and press enter to launch registry editor.
  • Navigate to HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Setup/OOBE/ key and change value of MediaBootInstall to 0.
  • Close registry editor and return to command prompt window, now type-in slmgr /rearm and press enter.
  • Reboot your computer and you should be able to activate Windows 8 normally.


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

If the above steps didn’t help you to resolve the issue; Windows Install Error Code 0xC004F061, Windows Upgrade Error Code 0xC004F061, then here is what you could use alternatively Advanced System Repair Tool. This tool helps you scan, detect and clean viruses and damages caused by them are easily repaired. This tool also acts as a data controller and optimizer tool for your system and helps in maintaining the key of all original software’s installed in your systems.


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