product key for windows 10 This tutorial will provide you with a list of RTM (retail) and KMS generic keys (default keys) for all editions of Windows 10..
product-key-win-10-pro A Windows product key is a 25-character key that tells Microsoft that your Windows operating system is authentic. The way you find it will depend on how you received the product key initially, but if you can't find it, I recommend Magical Jelly Bean, which is a product key finder.
windows-10-product-key These are NOT product / license keys that are valid for Windows activation. These keys only select the edition of Windows to install during setup, but they do not activate or license the installation.