Also available on the official Microsoft Software Download page, this tool can "force" the upgrade if Windows Update is not showing it. Why Avoid ".rar" Windows Updates?
: Official updates use "enablement packages" (for versions 2004/20H2) which act as a quick master switch, whereas unofficial files may corrupt your system. Download Windows10Upgrade 21H1 rar
Go to > Settings > Update & Security > Windows Update . Also available on the official Microsoft Software Download
The 21H1 release was a focused "scoped" update primarily improving: Download Windows10Upgrade 21H1 rar
Run the tool and select to update directly, or create a bootable USB/ISO for a clean installation. Windows 10 Update Assistant :