Windows Activation Error Code 0xC004C008

Overview Activation Error Code 0xC004C008

If you’re facing Windows 10 activation Error Code 0xC004C008 on a new system, this guide will help you resolve it.

Why This Happens

When you start up your new Dell computer, you might see an error message stating that the product key is already in use (Error Code 0xC004C008). This issue occurs because the activation server recognizes the product key as being used on multiple devices. Windows licenses, such as those for Windows 8.1 or Windows 10, are typically restricted to a single device. When the license is activated multiple times, this error can appear.

Steps to Resolve

1. Reboot Your System

   • In some cases, simply restarting your computer a couple of times and attempting the activation process again can resolve the issue.

2. Use the Activation Troubleshooter

   • Access the Windows Activation Troubleshooter, which can assist in resolving the problem by downloading necessary updates for the OA3 (OEM Activation Process 3.0).

3. Contact Microsoft Support

   • If the problem persists, contact Microsoft Support using Contact Us . Inform them that you’re encountering this error on a new computer. They can assist with activation to resolve the issue.