This particualr problem seems to be attributed to user system configuration---
In the past (About 7 years ago) this was an answer to a simliar problem.
The problem is almost certainly due to the way your computer links to the internet. Nothing to do with anti virus. Go to Control Panel>Network and Internet>Network Connections.
If you go via Network and Sharing Centre then look for Change Adapter Settings.
You may see several adapters for connecting to the internet. Personally I have Local Area Connection and Wireless Network Connection and Wireless Connection 2. Wireless Network Connection is my wi-fi hub. Wireless Connection 2 is Microsoft Virtual Mini-Port. It is important that all adapters are completely disabled other than the one you use of course. If they say not connected this is not good enough - they must say disabled. The only one I have enabled is Wireless Network Connection (my wifi hub). This cured my exact same problem with my Adobe Suite and other software. Good luck.
Unfortunately no luck. There were only two adapters - the one I need to use and the other one was already disabled. I uninstalled the disabled one just to be sure as I don't need it anymore (and because I'm good at uninstalling things). Still getting the same messages. 😞