(Optional) Rufus will present a customization prompt. If you are installing on unsupported hardware, check the box that says "Remove requirement for 4GB+ RAM, Secure Boot and TPM 2.0" . Click and wait for the status bar to show "READY". How to Install Windows 11 21H2 via ISO
Developer/community tips (when official older-build ISOs aren’t listed)
The preferred method for those running virtual machines or seeking a "gold master" copy for their archives. The Requirements
: Check that your local hard drive has at least 10 GB of free space to receive the package. Download Windows 11 21h2 Iso File 64-bit Microsoft
99%... Download Complete.
Organizations standardized on the initial release.
You can use Microsoft's internal command-line utilities, or third-party open-source tools like Rufus, to burn the ISO file directly onto the USB stick while preserving the required UEFI boot structure. (Optional) Rufus will present a customization prompt
With the ISO file downloaded and verified, John created a bootable USB drive using a tool like Rufus. He inserted a USB drive with enough free space, selected the ISO file, and waited for the process to complete.
Insert a blank USB flash drive (minimum ) into your computer. Warning: This will erase all data on the USB. Open Rufus . Under Device , select your USB flash drive.
: The easiest way to upgrade a current device to the latest supported version. How to Install Windows 11 21H2 via ISO
The safest method to secure the ISO file is through Microsoft’s official software download portal. Microsoft dynamically adapts its download page based on the operating system you are currently using to browse the site. Step-by-Step for Non-Windows or Mobile Browsers
He clicked "Download."
Navigate to the official page.