Sorry. I did miss that. I know you've already tried one Windows Update fix. Here's another, from the following link:
"Windows Update error 80070008 or 8007000e can often be fixed by running the Windows Update troubleshooter, which can automatically find and fix some common problems with Windows Update. To run the troubleshooter, follow these steps:
click start > control panel > system and security > troubleshoot common computer problem > fix problems with windows update
- These errors can happen if your computer runs out of memory while installing an update. If the Windows Update troubleshooter didn't fix the problem, try the following:
Close all programs, including ones that run in the background, such as firewalls, antispyware software, web accelerators, Internet security or antivirus programs, or proxy servers, and then run Windows update again.
If you turned off your firewall, antivirus, or other security programs, turn them on once the update has been installed. You can restart any other programs you closed, as well."
If that doesn't work, I think you're best option is to run sfc /scannow from an elevated command prompt -- in other words, with admin privileges. The .NET framework, versions 4.0 and 4.5, doesn't want to install properly, and that suggests there are issues with a system file or files in the operating system itself.