Fix 0xC004C020 activation error in Windows

Here's how to Fix 0xC004C020 activation error in Windows.

Error code 0xC004C020 in Windows usually occurs when there's an issue with the product key activation process. Here are some steps you can try to fix the issue:

1. Check the product key: Make sure that you're using the correct product key for the version of Windows that you're trying to activate. You can find the product key on the sticker that came with your copy of Windows or in the confirmation email if you bought it online.

2. Check the activation status: Go to the Settings app, click on "Update & Security," and then click on "Activation" to check the activation status of your Windows. If it says "Windows is activated," then the error might be caused by something else. If it says "Windows is not activated," then click on "Troubleshoot" and follow the on-screen instructions to fix any activation issues.

3. Check the internet connection: Make sure that your computer is connected to the internet and that there are no connectivity issues that might be preventing the activation process from completing.

4. Contact Microsoft support: If the above steps don't work, you can contact Microsoft support for further assistance. They might be able to provide you with a new product key or help you troubleshoot any other issues that might be preventing the activation process from completing.

5. Use the telephone activation method: If all else fails, you can try using the telephone activation method to activate Windows. Follow the on-screen instructions to activate Windows using your phone.

i. Here are some common activation error codes in Windows:

* **0x803F7001:** The software licensing service reported that the product key is invalid.
* **0x8007232B:** DNS name does not exist.
* **0xC004C003:** The activation server determined that the specified product key could not be used.
* **0x8007007B:** DNS name does not exist.
* **0x8007232A:** DNS server failure.
* **0xC004C008:** The activation server determined that the specified product key has exceeded its activation limit.
* **0xC004F042:** The activation server determined that the product key has exceeded its unlock limit.
* **0xC004F074:** The grace period expired before the system was activated.
* **0xC004F038:** The computer is not running genuine Windows.
* **0xC004F039:** Access denied. The requested action requires elevated privileges.
* **0xC004F041:** The RPC server is unavailable.

If you are experiencing any of these errors, you can try the following troubleshooting steps:

* Make sure that you are using the correct product key.
* Check your internet connection.
* Try running the activation troubleshooter.
* Try activating Windows by phone.
* Contact Microsoft support for further assistance.

Here are some additional tips to help you avoid Windows Activation Errors:

* Make sure that you purchase Windows from a reputable retailer.
* Keep your product key in a safe place.
* Activate Windows as soon as possible after installing it.
* Keep your Windows installation up to date.