Using a product key that was intended for Windows 10 and upgrading to Windows 11, Resetting it and then returning to Windows 10

AbdollhWin 1 Reputation point

Currently, I am using a laptop. The computer was running Windows 10 with a product key. As I have upgraded the laptop to Windows 11, I wish to reset it in order to save some space and make it run more quickly. In spite of this, it may not perform well and I cannot revert back to Windows 10. However, I do have the product key that I saw in Windows 11's cmd window and I can get the installation media for windows 10

Is it possible to use that key for Windows 10?

Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
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  1. Reza-Ameri 15,356 Reputation points

    In case you already installed the Windows 10 and it has been acivated, you may download and install the Windows 11 again.
    When you connect to internet, it will check with the server and activated.