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Error Code 0xC004C003 / 0xC004C060

If Error Code 0xc004c003 or 0xC004C060 is displayed, the Windows license you purchased was either not stored correctly in the system or the entered key is invalid. We will show you how to fix this error.

Screenshot of Windows 10 activation settings with error code 0xC004C003. The message indicates that Windows is not activated because no valid product key or digital license is present. An arrow highlights the error message, and the 'Troubleshoot' button is clicked.

 

Step 1

First start the Command Prompt by typing CMD into the desktop search bar. Then click on Run as administrator.
 
Screenshot of Windows search with the search term 'CMD'. The Command Prompt is shown as the top match, and the option 'Run as administrator' is highlighted to launch CMD with admin rights.

 

Step 2

Now enter the following command and confirm your entry by pressing the Enter key. Replace “X” with your product key.slmgr -ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

If you entered the command and the product key correctly, the message: “Product key installed successfully.“

Screenshot of the Windows Command Prompt (CMD) with administrator rights, where the command slmgr /ipk has been entered to install a Windows product key.

 

Step 3

Now you can activate Windows. Simply enter the following command and confirm by pressing the Enter key.

slmgr -ato

Done – Ideally, your Windows operating system has been activated.

 

Step 4

If activation still fails, finally run a troubleshooting check. To do this, proceed as follows:

  1. Press the key combination Windows + i
  2. Click on Update & Security
  3. Click on Activation on the left
  4. Click on Troubleshoot

Problem not solved?

If the activation problem persists, simply contact us via email: [email protected]

We need an uncropped screenshot from you showing the following content from the activation page.

Settings > Update & Security > Activation

  • The last 5 characters of the stored key
  • The red error message with the error code
  • Date and time