This article explains a few different ways for how to find a Windows 10 product key. Along with using applications on your computer, we’ve listed additional places you can check to locate the key.

First, you can purchase a new product key for Windows 11 or 10. This will allow you to activate your installation and receive security updates and technical support from Microsoft.

Right now in our PCWorld Software store you can buy a Windows 10 Pro license for just $69.99, 65% off its typical price of $199.99. Once installed, you can upgrade to Windows 11 Pro for free.

But when I did a brand new PC build I actually bothered to purchase a Windows 10 Pro key to go on that PC. It's one thing to upgrade existing licenses on old hardware.

Between the two, it’s the latter method of activation that requires you to find the product key for your Windows 10 copy to activate it. And the following section discusses how to retrieve it on ...

A single purchase of a Windows 10 Pro license nets you an activation key that you can install on up to three different devices. It's also a lifetime license, so you can enjoy what this feature ...

When you reset a PC that originally shipped with Windows 10 or Windows 11 Home edition, the activation process might restore that edition. Fortunately, it's easy to restore your Pro upgrade.