I was able to solve this with AVG support. Here’s a copy/paste of the solution for others to access in the future:
We’re glad to look into this & help you.
Sometimes, this might happen if the firewall settings are not modified to allow the app to access internet or share files.
In this regard, let us initially disable AVG Firewall temporarily to check if it helps. To do so : Open AVG - Hacker Attacks - Disable Enhanced firewall by clicking on the toggle bar.
If it allows you to access the app, follow the below steps to modify firewall settings :
Open AVG - Menu - Settings - Full protection - Enhanced Firewall - Enable Internet connection sharing.
Additionally, click on System rules that is available in the same page & enable the 1st two options : Windows file & printer sharing, remote desktop connections.
Please try the above steps & let us know the outcome.