1)Is the issue specific to any particular update or for all updates?
2)What is the KB number of the update that failed to install?
Let us follow the methods given below and check if the issue persists,
Windows Update troubleshooter is available that fixes some problems with Windows Update, and it might resolve this error for you.
Method 1: Run Windows update troubleshooter.
a) Press Windows Key + W.
b) In search box type “troubleshooting”.
c) Left hand side select “View all” and select “Windows Update”.
d) Click next.
You may also try performing a clean boot and try installing the Updates.
Method 2: Perform clean boot.
To help troubleshoot error messages and other issues, you can start Windows 8 by using a minimal set of drivers and startup programs. This kind of startup is known as a "clean boot." A clean boot helps eliminate software