On one of my PC's the VTScada Internet Client stopped updating it's graphics.

Here's what things look like, even after waiting for hours to give things time to load.

Has anyone seen this before & solved this problem? If so what did you do?

I suspect a networking issue. Probably something to do with firewalls or HTTPS security certs. We had an issue like this and it ended up being city IT's firewall. They had to troubleshoot which rule and disable it.

Thanks, that's reassuring. So far it's only affecting my laptop which I use to maintain our customers SCADA via VPN. I was worried this issue could spread to our customer's PCs and now I'm less concerned.

Next time I'm on-site I'll physically connect the same laptop to their LAN and see if the problem goes away. Hopefully it's the firewall in our office.