But, before you start Windows Update, make certain that the KB3102810 is installed. Find out by clicking on Installed updates in the bottom left corner of Windows Update. Once you click that, wait patiently while the green bar marches from left to right
all the way. Then put KB3102810 into the search box. If it is not installed, Google the “KB3102810 Windows 7 64” Assuming your system is 64 bit. Download an install it.
In most cases, the following rather simple and quick process works.
Type services in the text box above the start globe. Find each of the following and ensure they are set to automatic: Background Intelligent Transfer services, Cryptographic, Windows Installer, Windows Update. Double click on each item and choose automatic.
Now re-start Windows Update. Do NOT restart Windows. Be very, very patient, it will likely take a long time.
If that does not produce results, you should download and run the following. It takes a very long time to run as well.