How to Fix Windows 11 Activation Error Code 0xc004c003

Learn how to fix the activation error code 0xc004c003 in Windows 11 that occurs after upgrading from Home to Pro edition. This error can also happen when the existing product key is used for activation. If you are facing this error, don’t worry, as there is a solution for it.

Causes of Windows 11 Activation Error Code 0xc004c003

The primary cause of this error is an incorrect entry of the product key during the activation process. You may also see this error when you try to activate the Professional version of Windows 11 with a Home version license key. The following are the steps you can take to fix this error:

How to Fix Windows 11 Activation Error Code 0xc004c003

  • Check the Windows version of your Home: Windows 11 is available in different editions, including Home, Professional, and Enterprise. Check the version of Windows 11 installed on your PC to ensure it matches your previous version.
  • Downgrade from Windows 11 Professional to Windows 11 Home: If you upgraded to Windows 11 Professional version with a Home version license key, you can downgrade to the Home version by tweaking the registry editor, then running the ISO configuration file to finish the process.
  • Activate Windows 11 with the Command Prompt: In some cases, the Microsoft server may fail to verify and activate your license; if activation fails, use the Command Prompt to activate your license.

Final Remarks

We hope this guide has helped you to fix Windows 11 activation error code 0xc004c003. If you have any queries related to this topic, feel free to contact us. Also, please share this guide with your family and friends to support us!

FAQs

1. Why does Windows 11 Activation Error Code 0xc004c003 occur?

This error may occur due to an incorrect product key entry during the Windows 11 activation process. Also, if you try to activate the Professional version of Windows 11, it may show error 0xc004c003 when you’re using a Home version license key.

2. How can I check the Windows version of my Home?

To check the version of Windows 11 installed on your PC:

  • Press Win + I to open Settings
  • Inside the System tab, scroll down and click About
  • In the precise panel, scroll down to the Windows Home specification part. Here you will find the Version part to see the Windows 11 version installed on your PC.

3. Can I downgrade from Windows 11 Professional to Home version?

Yes, you can downgrade from Windows 11 Professional to Home version by tweaking the registry editor, then running the ISO configuration file to finish the process.

4. What should I do if Command Prompt fails to activate my Windows 11?

If the Command Prompt fails to activate your Windows 11, use the digital product key or run the troubleshooter to verify and activate the Windows 11 startup. For more troubleshooting steps, you can refer to Microsoft resources on how to reactivate Windows 11 after a hardware change.

Editorial Staff
Editorial Staffhttps://www.bollyinside.com
The Bollyinside editorial staff is made up of tech experts with more than 10 years of experience Led by Sumit Chauhan. We started in 2014 and now Bollyinside is a leading tech resource, offering everything from product reviews and tech guides to marketing tips. Think of us as your go-to tech encyclopedia!

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