Windows update fails to install updates (Error 66A, 8007006E)

Just another suggestion that's worked for me in the past. If you're letting Windows Updates "Install updates automatically (recommended)", I'd change that to "Never check for updates (not recommended)". Then manually check for updates. Updates are usually classified as Critical/Important, Recommended, and Optional. Start with the critical/important. If you've got 5 or less I'd install just one at a time, rebooting after each install. Keep track of each KB number so if there's a problem you'll know which update to uninstall.

If you've got more than 5 updates I'd install in groups of 3-5 at a time. Again, keep track of the KB number, reboot after each group, and if problems occur you'll know which group to uninstall. Then try installing one at a time. They'll either install OK or you'll know exactly which update is causing the problem. Ignore that update for the time being and continue installing the next group. It's a lot slower process but I've had good results on my machines doing it this way.

so, what i have done now is uninstalling Microsoft visual C++ stopping the windows updates service, deleted the temporary files of windows update, and restart again.
The security update for Microsoft visual C++ installed successfully, finally.
However, the office updates failed to install. Although i'm trying one by one!
I'll try to uninstall microsoft office and install it again.

@karlsnooks

Link|http://s13.postimage.org/iaand7duv/Untitled.jpg

here is the image

I have installed Office 2010 but there are still lingering 2007 files/programs on my system.

I tried to delete them but that wasn't possible because they were all in my Windows.old files.

However, when I uninstalled the Microsoft 2007 Compatibility program the unneeded updates magically were unnecessary according to the updater.

Problem solved...for me at least.