Reinstalling software? Older versions of Windows and Microsoft Office require product keys. Here's how to find them before your PC goes kaput. Our team tests, rates, and reviews more than 1,500 ...

You might know your version of Windows (i.e., Windows Home or Windows Pro), and hopefully you knew how to get Windows for cheap or even free, but do you know if it ...

When you buy a copy of Windows 11/10, you get a product key. This key is used to activate Windows on your computer. It’s a 25-character product key, and it’s important that you keep it noted somewhere ...

In brief For the longest time Windows PCs came with a product key sticker that was placed outside of the machine or with your computer's manuals. But in recent years manufacturers started storing this ...

Windows 10 includes many ways to help you change your product key, and in this guide, we'll show you five of them. When you purchase through links on our site, we may earn an affiliate commission.