How do I permanently activate Microsoft Windows 11 Pro?

To permanently activate Microsoft Windows 11 Pro, you can do so through the Settings app:

Click on the Start button and select Settings (gear icon).
Go to Update & Security > Activation.
Click on “Change product key” and enter your valid Microsoft Windows 11 Pro product key.
Follow the prompts to complete the activation process. Once activated, your Microsoft Windows 11 Pro will be permanently activated on your device.