I think MS doesn't know what the hell it's doing half most of the time. A cumulative update is just that, it should supercede all previous updates. As it stands now I have five IE11 updates, KB2909210, KB2929437, KB2976627, and now KB3021952 and KB3034196. I add them all to a base image containing only IE11 and it says I still need KB3021952. I updated my laptop by WU and it doesn't need KB3021952 a second time, but it also doesn't install KB3034196. You have to run WU twice to install KB3034196. Some dependency on KB3021952? Strange things at Redmond to be sure. How about rolling them into one update? Oh there I go making sense.