Troubleshoot Windows Activation Errors

The (0xC004F050) error code means the key cannot activate the edition of Windows you have installed on your PC because the edition of the key does not match the edition installed.

Reason:
– The license cannot be used to upgrade an existing installation, e.g. going from Home to Pro edition without performing a fresh Windows install.

Solutions:
– Perform a fresh Windows installation using the ISO (see guides below).
– Purchase a Windows product key that matches the Windows edition you have installed.

Windows installation guides:
Windows 10 installation
Windows 11

The 0x80070490 error code is most commonly seen when attempting to upgrade an existing Windows edition, follow these steps to resolve.

– Press the Windows key + X
– Go to Settings
– Click Update and Security
– Click Troubleshooter then Additional Troubleshooter
– Look for Windows Update and run the troubleshooter
– Download this tool to reset the Windows Update Components (Works for both Windows 10 and 11): https://www.tenforums.com/tutorials/24742-reset-windows-update-windows-10-a.html
– Restart your PC
– Press the Windows key + X
– Go to Settings 
– Click Update and Security
– Check for Updates and install all updates available.
– Restart your PC

Attempt the upgrade to Windows Pro by entering your product key in the Activation window.

Make sure your computer is connected to the internet and that the system date and time are set correctly for your timezone.

If you have no internet connection, you will see the icon shown above and you must restore your internet connection.

Run the Windows Activation Troubleshooter which will attempt to automatically resolve any issues.

Check Windows Update for any outstanding updates, and download and install any outstanding updates.

Restart your PC and retry the activation.

Try a phone activation by clicking the Activate by Phone link on the activation page (if the option is shown).