If you purchased a new device that was pre-installed with Windows 10, your product key is stored in the device firmware. If Windows 10 has been installed on your device and you’d like to upgrade to the next major release of Windows, such as the upcoming update, you’ll won’t need a new product key. However, your device will not be activated and you will not be able to use certain features, such as Cortana. If you don’t have a Windows 10 key, you can still install and use the software by using a valid product key from a previous version of Windows. If you have a valid key, you can enter it during the Windows 10 installation process to activate the software. Windows 10 keys are typically provided with new devices, or they can be purchased from Microsoft or other retailers.
They can be used to install Windows 10 on a new device, or to upgrade an existing installation of Windows 7 or 8.1. Windows 10 keys are 25-character product keys that are used to activate Windows 10 installations.
We often get asked ‘How many times can you use a Windows 10 key? What is a Windows 10 key?