I am still seeing this problem intermittently on client machines. There doesn’t seem to be a pattern - sometimes I can connect 6 times in a row, and then it stops working. Other times, it just won’t connect at all.
One point of information is the following - the server is accessible both on the customer’s internal network and externally via the internet.
When I access it using the external IP, I never have this problem.
The customer’s users are the ones seeing this problem when they access the server using the server name (“SCADAServer01”) on the internal network. They can’t use the external IP address due to the way the network is configured.
Don’t know if this is relevant but it might add something to the investigation.