Believe me, I tried them as they popped up in this thread. I had pages of failed KB3038314 installs before I reinstalled windows again. They did not work for me. Thank you for supplying a possible fix for some though. As reported across the net, it will
install on some systems and won't on others.
I still think this runs deeper than KB3038314, as I am down to that update as the only available update. But then I run disk cleanup on my windows drive then select "clean up system files" and select windows update cleanup. After that is done KB3021952 reappears
and installs successfully again.
I'm sorry but cleaning out the windows update files should not make an update reappear and install again over and over. This points to an issue that has obviously been around well before KB3038314 as KB3021952 was released 2/10/15. So that means that for
over two months a Cumulative Security Update has been falsely saying it is installing on peoples computers. There is no way that this is actually even installed if it can be "removed" by deleting old windows update files from a folder.
Cumulative Security Update for Internet Explorer 11 for Windows 7 for x64-based Systems (KB3021952)
Download size: 5.2 MB
And not only that, I went as far as disabling WU and renaming C:\Windows\SoftwareDistribution, then re-enabling WU. Then I used a very useful compare utility on the two folders. I found this C:\Windows\SoftwareDistribution.old\SelfUpdate\Handler\WuSetupV.exe
and many other extras, but this particular file is associated with a virus and is not present after WU resets the SoftwareDistribution folder. But again, after all that it shows only KB308314, and then after windows update cleanup KB3021952 shows up again
and installs "successfully". Something is very wrong here.

The failure of KB3038314 in WU is a download issue from reading logs as the 35 other updates are skype and language files and are hidden. And also the standalone KB3038314 while it will download fine, it will also fail to install.
{AC20E50C-1ABA-4042-B321-7FC497CC44D6} 2015-04-21 09:32:53:360-0400 1 147 101 {00000000-0000-0000-0000-000000000000} 0 0 AutomaticUpdates Success Software Synchronization Windows Update Client successfully detected 36 updates.
{043F61AE-4CBC-491E-A287-C77ABF6691CE} 2015-04-21 09:32:55:737-0400 1 161 106 {5534AE2C-09AC-4541-AFB2-954EE1E1DC10} 203 80092004 AutomaticUpdates Failure Content Download Error: Download failed.
{1EAA86BE-237F-4EE9-846F-F0A18810FF75} 2015-04-21 09:38:41:293-0400 1 147 101 {00000000-0000-0000-0000-000000000000} 0 0 AutomaticUpdates Success Software Synchronization Windows Update Client successfully detected 36 updates.
{066CF1EA-C081-4BA6-917E-009834FA962B} 2015-04-21 09:38:43:689-0400 1 161 106 {5534AE2C-09AC-4541-AFB2-954EE1E1DC10} 203 80092004 AutomaticUpdates Failure Content Download Error: Download failed.
Basically the further down the rabbit hole I go, the more I start to wonder about the integrity and security of my OS.