Some Windows 10 devices come with a digital license, which is linked to your device's hardware. If you've upgraded to Windows 10 for free or purchased a digital license, you don't need a product key.
Microsoft never officially closed the free upgrade offer from Windows 7 or Windows 8.1. If you have an old laptop or desktop lying around with a valid (even if unused) Windows 7 key sticker on the side, you can: windows 10 product key pastebin
Some Pastebin posts contain genuine Volume License (VL) MAK keys. These keys have a finite number of activations (say, 500 or 5,000). By the time the key ends up on Pastebin, it has been shared millions of times—the activation count is long exhausted. Some Windows 10 devices come with a digital