MSE Won't Complete Full Scan, Error 0x800106ba

Unfortunately the data there only goes back to around midday today, so there's nothing there from any install attempts. (and I see you've hidden these three updates now).

Let's see what CheckSUR has to say before doing anything else.

CheckSUR found and fixed 4 errors...

Summary:
Seconds executed: 420
Found 4 errors
Fixed 4 errors
CSI Payload File Missing Total count: 4
Fixed: CSI Payload File Missing. Total count: 4

a pair of the errors involved the installer engine component- so that may account for your failing updates.
Try unhiding one of them (I'd suggest not the IE one), and trying to install it again - post the new windowsupdte.log file afterwards, after rebooting.

Good -

Code:

2015-05-10 15:32:08:498 1148 1280 Report REPORT EVENT: {1E8DA62E-8AFA-46C5-BB7C-5CEB91D9AF6A} 2015-05-10 15:31:01:666-0500 1 183 101 {94A9CE1D-6901-440F-8000-1B7ADB1D711D} 200 0 AutomaticUpdates Success Content Install Installation Successful: Windows successfully installed the following update: Security Update for Windows 7 for x64-based Systems (KB3004375)

Unhide the other two, then do another Check for Updates before attempting anything.
Does KB3004375 reappear?

NoelDP,

The only update that is now available is the Cumulative Security Update for Internet Explorer 11 (KB3021952). Any others have disappeared. Even though, I've just done the one.

Would you like me to try and update it?

Yes please - I was partly expecting such a result.

You're welcome - good luck!