Hello, We have a machine with a CtrlX on an End User in the pharmaceutical sector and we have to communicate with their MES via OPC UA Server. On this machine we use a CtrlX Core with OPC UA Server 1.16. There are two WinStudio screens working locally communicating via OPC UA perfectly. Then on a server we have the OPC UA client from MES called Traksys. The problem is that we have installed the certificates both in the MES client and in the Server (CtrlX Core), we even get the client's certificate as Reject, we do the Trust, but then the client does not connect and closes the connection. From the same server we tested it with UA Expert and it works. It must be something to do with the configuration or the type of certificate but we can't find it. We have tried None/None and it doesn't work either. The connection is not counted by the CtrlX Core as rejected. We have looked at the connections with Wireshark from the server and I don't understand why the connection is refused. Attached are the Wireshark data the OPC UA Expert and MES client. Also the certificates. One of the differences I see between certificates is the Basic Constraints. I don't know if this can affect it. I am not an expert on these certificate and security issues. Do you see any problem in the client certificate that is incompatible with the OPC UA Server of CtrlX Core? Anything you can try tell me, the customer is very important and has a lot of equipment from other manufacturers that work with OPC UA without problems. Thanks in advance.
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