Will avast have an update to fix this problem. Hate to see free avast customer base decrease and go somewhere else. Hope they fix this soon. Any feedback appreciated.
If you supplied some more information about the problem and what system your on, what version of avast you are using, other security software installed plus adding what warning avast is giving you then people may have something to work with and help you.
Delete the relevant firewall rules, reboot, reconnect and build the firewall rules anew.