All My Browsers cannot open

AVG Protection
1

After installed AVG Internet Security 2015 successful. My IE, FireFox and Chrome all cannot open.
But When I resume AVG IS 2015 protection. They can open and connect Internet.

Please tell me how to fix this trouble.

3

Hello Daniel. I request you to turn off firewall and check if you are able to connect to internet. Please reach us back if you are able to connect to internet when firewall is disabled. Thank you.

2

Hello Daniel. I request you to turn off firewall and check if you are able to connect to internet. Please reach us back if you are able to connect to internet when firewall is disabled. Thank you.