An official Windows 8.1 ISO from Microsoft typically includes only the (Update 3 from November 2014). After installation, it requires hours of Windows Update fetching several hundred patches.
How to create usb bootable install media for Windows 8.1 in 2025
: This utility can download official ISOs directly. In Rufus , click the arrow next to "SELECT" and choose DOWNLOAD to pull the latest 8.1 image from Microsoft servers.
: You can often still find the Windows 8.1 Download Page to select your edition and language.
