A digital copy of your product key is included when you purchase Windows 10 Home or Pro from the Microsoft Store or another online retailer like Amazon. If your computer is new and came with Windows ...

However, you can still buy Windows 10 from some third-party retailers ... is that because I upgraded from Home to Pro on the example PC, the product key displayed is for the upgrade to Pro ...

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 ...