You can use a number of methods to download and install Windows 10 21H1, May 21H1 Update. This includes the official ISO images, Windows Media Creation Tool, Windows Update, and the Upgrade Assistant software.
Microsoft released Windows 10 version 21H1 to consumers and customers. It is a minor update that comes in form of a cumulative update via an enablement package to users of Windows 10, version 2004, and Windows 10, version 20H2.