Advanced firewall -

Hello Tom,
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused. We'll certainly check and help you out. 
May I confirm whether the internet working fine when you disable the firewall component alone?
Have you installed any other antivirus programs other than AVG on your PC?
If you've any VPN then please turn it OFF and check the issue.
Awaiting your response.

Hello, for some reason the advanced firewall is blocking my internet connection. I mentioned that I work with a trusted network and I marked the allow internet connection sharing mode. I also rebooted my pc twice with 5 minutes in between… nothing is solving my issue.

Hello Tom,
Thank you for contacting AVG Community Support.
We apologize for the inconvenience caused. We'll certainly check and help you out. 
May I confirm whether the internet working fine when you disable the firewall component alone?
Have you installed any other antivirus programs other than AVG on your PC?
If you've any VPN then please turn it OFF and check the issue.
Awaiting your response.

Hi,

My VPN is off and I'm not using any other anti-virus software. The issue is still present.