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).

This post shows how to find Windows 11/10 Product Key using Command Prompt or PowerShell, from BIOS, UEFI or Registry. It works for Retail, OEM, etc, licenses.

Windows 10 includes many ways to help you change your product key, and in this guide, we'll show you five of them.

Want to reuse your existing Windows license key with a new PC? We explain how to determine if that’s possible.

Learn how to change your product license key in Windows 11/10, and activate Windows. Maybe you want to upgrade or use Multiple Activation Key.