Hi,
can you please open the ArSim GUI, go to tab “Console”, copy the whole text there, and paste it here? Maybe this text (which is the logbook of the simulated PLC) gives us a hint what’s going wrong…
… maybe I’m completely wrong, but for me it sounds still like some blocking issue from Windows side. As we “learned” from this thread, even switching firewall “off sometimes does not means off”:
So additionally I would at least for test propose to switch the firewall to “on”, start again the ArSim, and check if a dialog like the following one appears (and where you’re able to grant the access for different networks explicitly):
Best regards!