Hello Petri,
I apologize for the inconvenience. Please open Run command ( Press Window key + R key), type "services.msc" and search for AVG Firewall. Please start/restart the firewall services and then check if that fixes the issue.
If you still face the same issue, then please follow the steps in this article http://support.avg.com/SupportArticleView?urlname=How-to-troubleshoot-issues-after-upgrade-to-the-latest-AVG-antivirus-product to reinstall AVG Internet Security by running AVG Remover and AVG Clear tool.
Firewall cannot start because an errorrs has occured in communication with driver
Hello Petri,
I apologize for the inconvenience. Please open Run command ( Press Window key + R key), type "services.msc" and search for AVG Firewall. Please start/restart the firewall services and then check if that fixes the issue.
If you still face the same issue, then please follow the steps in this article http://support.avg.com/SupportArticleView?urlname=How-to-troubleshoot-issues-after-upgrade-to-the-latest-AVG-antivirus-product to reinstall AVG Internet Security by running AVG Remover and AVG Clear tool.