SIMATIC WinCC Open Architecture Forum

Good day ,

Kindly, we have an issue of the desktop UI running on different subnet (virtual LAN) . The case that we have faced is about using one workstation in the same subnet and the second workstation on separate subnet , the workstation that is located within the server subnet connects perfectly , however the one on the second subnet cannot get authentication ( it gets the name of the running project on the server but fails to run it ) . I wish anyone could help .

Regards.

I assume the problem comes from the config file the desktop UI receives from the server. Check on the client with the problem what's inside the config file (in the project's cache dir/config) in the general section
for data and event entries. I assume they define hostnames/IP addresses the client can not reach.
To solve this, you need to adjust the getConfig() function in the webclient_http.ctl script to return an appropriate event/data IP address for this specific UI (e.g. based on the ip address from where the request comes)