How to find your Microsoft Windows Product key

Via The Command Prompt

You can use the command prompt to find the key type the below command

wmic path softwarelicensingservice get OA3xOriginalProductKey

The product key will then be displayed in “XXXXX-XXXXX-XXXXX-XXXXX-XXXXX” format.

Via The Windows Registry

From the run box type regedit

Now you need to navigate to the following folder path: 

1. HKEY_LOCAL_MACHINE
2. SOFTWARE
3. Microsoft
4. Windows NT
5. CurrentVersion
6. SoftwareProtectionPlatform:

Once there, you can find your product key next to the BackupProductKeyDefault entry.