If Windows 10 was purchased from Microsoft or some licensed retailer, it is a Retail license. Here’s a good rule of thumb: If a Windows 10 device comes with Windows preinstalled, it is a so-called OEM (Original Equipment Manufacturer) license. Taking care of your digital licenses is equally important whether you have just one device, or a complex home network with multiple devices. Many of you geeks have a Visual Studio subscription (formerly known as MSDN), with lots of product keys to use.
