Clear Windows Update Cache

Doing the following will clear the Windows Update Cache and force new downloads for potential corrupted updates.

Should be run from an Elevated Command Line

net stop wuauserv

cd C:\Windows\SoftwareDistribution\Download
del /s /q C:\Windows\SoftwareDistribution\Download\*.*
rmdir /s /q C:\Windows\SoftwareDistribution\Download

The attached Batch file(WuReset.bat) contains a script that does a bit more then the above
Try the attached script Run as Administrator

If the above does not help Windows Update Fails article might.
Also perhaps DISM and SFC could help. Find how to run Here