Hello Alexandru, I am not sure if the issue reported below is by design or is a bug: NOTE: Using Settings Sync Host as example here; issue occurs with other applications. Settings Sync Host attempts connection and WFC notifies. Create custom rule from within notification that includes local port. All future connection attempts by Settings Sync Host using a different local port/remote address are blocked and WFC does not generate any outbound connection notification. BUGS: Also, when you double-click on the vertical scroll bar in the Rules pane, it opens the firewall rules customization window. When typing into the search field this is a long hang\delay.