INTERNET DONT CONECT AFTER AVAST INSTALATION

After i install avast in my Windows 7, my internet dont work !
If i enter in resident protection, internet protection, and finish it, then i can conect in internet !

What is hapening, somebody can help me ?

ps. sorry my english i am from Brazil ! ???

Thanks

Which is your firewall?
Did you have any other antivirus before avast?

Have (or did) you another Anti-Virus installed in this system, if so what was it and how did you get rid of it ?

What is your firewall ?
Does it allow avastSvc.exe internet access ?

  • If it does delete the entry for it and reconnect to the internet, this should force the firewall to ask permission again.

Run Norton/symantec removal tool restart and try again
you find it her as Nr.24 http://uninstallers.blogspot.com/

report backā€¦