KB2726535 is superseded by KB2768486 & KB2905454 The IE11 prerequisites components of KB2726535 is superseded by KB2768486, and KB2905454 completes the supersedence so, KB2768486 becomes the new prerequisite instead of KB2533623 & KB2731771 BTW, those KB article are not accurate, if you want to see the actual or complete list of prerequisites check SETUPDOWNLOADLIST.txt that is included with IE11.exe package (after you extract it)