How to find Windows License Key

Find Your Windows 10 Product Key Using the Command Prompt

To find your Windows 10 product key using the Command Prompt, you'll need to open the command line application with administrative privileges. To do this, type "cmd" or "Command Prompt" in the Windows search bar. Command Prompt will appear in the search results. Select "Run As Administrator" from the window that appears. If prompted, enter your Windows account password.

Once open, copy and paste the following command and then hit the Enter key:

wmic path softwarelicensingservice get OA3xOriginalProductKey

The 25-digit product key will then appear.

This method displays the Windows product key stored in your computer's BIOS or UEFI firmware. In other words, it shows the original Windows key your computer came with. Properly it is called an "OEM Key." If you've installed Windows with a different key since then (or acquired a digital license), it will be different from the current key in use on your PC. You'll have to use the next method if you want to find that key.