1. Download Windows 10 21H2 via Official Microsoft Servers (Rufus Method)
The most reliable way to get an unaltered, official ISO for version 21H2 is through Rufus, a free utility that includes a script to query Microsoft's servers directly for older builds. windows 10 pro 21h2 iso download 64bit link
: Click the down arrow next to the "SELECT" button and change it to DOWNLOAD . windows 10 pro 21h2 iso download 64bit link