Method 1: Find Windows 10 Product Key Using Command Prompt Command Prompt (or CMD) is probably the easiest way to find the Windows 10 license key on your computer.

Your Windows 10 product key may be necessary to unlock all features -- but it's not easy to find. Here's where to look for the product key (even if it's lost).

Your Windows 10 product key serves as proof that you actually own Windows 10. You can find your Windows 10 product key through the Command Prompt, or by checking the packaging. You might need to ...