Hello, I am very sorry you lost remote access because of Avast. It is most probably because the Firewall took the original profile settings from Windows, which was public profile. Our public profile is much more strict and blocks all the incoming TCP/UDP traffic (initiated by other devices)... There are already some measures in place that should prevent this kind of situation - FW automatically selects profile based on network parameters, it will not allow you to switch to public profile while the pc is under active RDP connection. Unfortunately, in this case (after fresh installation) it took the setting with higher priority which was the original setting from Windows. We are already working on this to prevent this situation in the future.
By any chance, I suppose you do not have an access to the virtual hdd? In that case we could change FW configuration files and it would reboot with new settings. Otherwise, I am really afraid that the remote access is lost. I am sorry.