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 ...

This article, updated to reflect Windows 10 version 2004 (aka May 2020 Update), covers the most common scenarios you're likely to encounter when installing, reinstalling, and activating Windows 10. Is ...

With most Kaspersky Lab software products, there are two numbers you will need to authenticate your software and to keep it up to date. The first number is your activation code. This is the number you ...