I've recently experienced a problem on one of our family computers with installing Cumulative Security Update for Internet Explorer 11 for Windows 7 for x64bit-based Systems (kb3038314).
Most of our computers installed this update properly, but one says it didn't. Repeatedly tried (unsuccessfully) to install the update, and even rolled back to IE10 then re-updated to IE11, but no joy.
I Googled this problem today and found that numerous people have been reporting this error to Microsoft without a MS response. However, there may actually be a glimmer of hope. Just saw an online article today at (http://www.infoworld.com/article/2914383/operating-systems/microsoft-acknowledges-but-doesnt-fix-kb-3038314-installer-fail-error-80092004.html) saying to look at the "Help", "About Internet Explorer" menu choice in IE11, and if it shows KB3038314, then the update actually did install even if Windows Update says it did not.
This appears to be the case with our one family computer reporting a failed windows update, so I think we're okay.
We just need to wait now for MS to develop a fix to clear away the "Will not install the update" error message.
Edited by Torvald, 26 April 2015 - 06:44 PM.