A driver is a small software program that allows your computer to communicate with hardware or connected devices.
This means that a driver has direct access to the internals of the operating system, hardware etc.
I had figured out that Zonealarm was the culprit but couldnt see any instances in the program control section of AVG installer being blocked.
Although it is difficult to determine the exact cause of the problem, experts suggest the code shows up commonly due to corrupted or damaged registry files, malware or spyware infection, old or outdated Windows driver, file system corruption and most importantly ‘Unfinished installation of Windows / improper maintenance cause.This, can lead to events such as program failing to run, system freezing, system start up problem, and system shut down problems. Make sure that you have the latest drivers installed for your Windows machine.Also, I would suggest you to install all the available Windows Updates including the optional updates for drivers.I wonder how many AVG users have been tempted to abandon AVG for this very reason and give Zonealarms new package a try.Thanks again Alan for saving me a lot of time and trouble.On the other hand, manual updates using the AVG Anti-Virus Definitions package requires more time and can only be performed in full.