Bad OPC connection

i'm working on a project to connect machines to Ignition through an OPC server. the connecttion was fine but lately it became faulted and displays this error:


any idea or hint are welcomed

Hello mootez_bh,

What type of OPC UA server are you using? Typically, when we see that error message, we like to perform a Wireshark capture to confirm that the issue is coming from the Uri being mismatched.

You could try regenerating the certificates on both the server and client. Then redo the OPC UA connection.

You also have the open a support ticket with us so that a Support Engineer can help you troubleshoot this further.

I found some other forums posts that might be helpful where one of our devs discusses this error message in more depth.