I have an HP laptop with windoes 8.1~ I recently installed Avast Premier. shortly afterwards I noticed an Avast pop- up with a message stating Avast detected changes in your internet settings and has changed your firewall settings. My wi- fi would then go down causing a loss of internet connection. Shortly afterwards I would get another pop- up with the same message and the wifi would come back on (sometimes). I called Avast support and they told me that I had another anti virus program that was conflicting with Avast and it would need cleaning out they charged me $189 for a technician to fix the problem. They took 2 hours to run several remote “clean up” programs and nothing changed. I call them again the next day and once again they went through the clean up process. The Wi fi still goes up and down at random times and always I get the Avast pop up message.
I believe the firewall is the problem but the Avast support don’t seem to know how to fix it. Anyone else ran ito this type of situation?
See here…scroll down to OTL, follow instructions and attach OTL diagnostic log http://forum.avast.com/index.php?topic=53253.0
If you paid $189 for support for Avast Premier and no solution, I’d be looking for a refund.
The support by the way is a “3rd Party” provider not Avast technicians.
Is there a way for Avast users/customers to contact Avast technicians directly?
That’s what this forum is for.
So true .
I presently am not using the Avast Firewall so I’m the wrong person to attempt to assist you.
There are a number of users that may have input. All the assistance here is by “long time users” of Avast and occasionally some of the Avast team/dev add help 
Why is there an unexplained change in your internet settings ???
If this is your home service, I would contact your ISP and ask them what is going on.