Microsoft Toolkit

Click this link to download the licensing toolkit.
Once you have it saved on your computer, double click to run it. Choose the Windows symbol to continue.
Go to the Activation tab.
Click on the green EZ-Activator button.
The toolkit will display a message to let you know it has been successful. When you see this message, you’re done and you can click the red X at the top left to close it,
That’s it, Windows should be licensed and properly activated now.