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).

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.

Type the following into the command prompt window: wmic path softwareLicensingService get OA3xOriginalProductKey If the command works on your machine, you’ll see the Product Key. Unfortunately ...

You can be more efficient while in Command Prompt using the command history feature, and in this guide, we'll show you how to use it.