What I'm going to describe next already happened to me in the past, but after a pc restart it worked fine. Now it just won't work anymore!
I can't access web pages at all, and it all started not working just...suddenly, with no apparent reason\action.
After some time I figured it might be a conflict between Comodo Firewall and Avast antivirus. And after some trial and error I discovered what's the problem: the avast Web Shield.
I had no other option than to leave it disabled so I can browse(every other internet services are working fine).
The problem is that I can't find a good answer on the internet about how to resolve this, all I could do was to just "add as trusted application" every service related to avast, and it still doesn't work.
It's odd this happened all of a sudden... probably an update?
Can somebody help me please? Thank you.