The Windows Update Assistant downloads and installs feature updates on your device. Feature updates offer new functionality and help keep your systems secure. You’ll get these updates automatically after you download the Update Assistant.
To use the media creation tool, visit the Microsoft Software Download Windows 10 page from a Windows 7, Windows 8.1 or Windows 10 device. You can use this page to download a disc image (ISO file) that can be used to install or reinstall Windows 10.