Any information would help us to help you.

As you say you are having the same issue with the web shield as others, so what have you done about it:
e.g. of the suggestions made in other topics, which have you tried ?

There were also no doubt lots of questions asked (firewall, OS, previous AV, other security software), so you could give those answers here ?

Then we will know more about your system and what you have tried so that we don’t repeat things that you have tried.