Since AVG has updated to 2019 - I’ve been unable to acess plex from outside my network.
I’ve tried the following which hasn’t worked 1) Open AVG Internet Security interface and click on “Menu–>Settings–>Components–>Enhanced Firewall–>Customize”
2) To the right of “Policies” scroll down to click on “System Rules”
3) Enable the option for “Windows file sharing and printing”, “allow remote desktop connection” and the last entry “Enable stealth mode”
4) Below policies, click on “Network Profiles”, to the right click on the network connection and change the profile to “Private” if it is set to “Public”.
You said you allowed remote desktop in AVG, did you allow Port 32400 which is required for Plex remote access? Or allow all network access to Plex binary?
Some firewalls you can allow specific ports and some you have to allow access to the binary.