Any idea why my loopback OPC server isn't working?

Ignition
1

Here are all the relevant logs I can pull up:

org.eclipse.milo.opcua.stack.core.UaException: no matching endpoint found: transportProfile=TCP_UASC_UABINARY, endpointUrl=opc.tcp://localhost:62541, securityPolicy=None, securityMode=None
at org.eclipse.milo.opcua.stack.server.transport.uasc.UascServerAsymmetricHandler.lambda$openSecureChannel$5(UascServerAsymmetricHandler.java:454)
at java.base/java.util.Optional.orElseThrow(Unknown Source)
at org.eclipse.milo.opcua.stack.server.transport.uasc.UascServerAsymmetricHandler.openSecureChannel(UascServerAsymmetricHandler.java:444)
at org.eclipse.milo.opcua.stack.server.transport.uasc.UascServerAsymmetricHandler.lambda$sendOpenSecureChannelResponse$3(UascServerAsymmetricHandler.java:355)
at org.eclipse.milo.opcua.stack.core.channel.SerializationQueue.lambda$encode$0(SerializationQueue.java:59)
at org.eclipse.milo.opcua.stack.core.util.TaskQueue$TaskWrapper.run(TaskQueue.java:273)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

LMK if there’s anything to look for in kindling or in the program files. I haven’t upgraded recently, but i’ve been restoring to and from gateway backups pretty regularly.

That security token failure is repeated a bunch.

2

Your connection is configured for no security; maybe the server is configured only to allow secure connections (the default configuration).

3

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which of these values should I be updating?

(alternatively what do I change in the ignition opc server loopback config)

4

Run through the endpoint discovery again on the connection and there will only be one endpoint to select.

5

Did that, left every value default, and it faulted.

6

Now seeing UaServiceFaultException: status=Bad_UserAccessDenied, message=User does not have permission to perform the requested operation.
at org.eclipse.milo.opcua.stack.client.UaStackClient.lambda$deliverResponse$5(UaStackClient.java:337)
at org.eclipse.milo.opcua.stack.core.util.ExecutionQueue$Task.run(ExecutionQueue.java:119)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)

8.1.48 (b2025042910)
Azul Systems, Inc. 17.0.14

7

Configure the username and password on the connection to be opcuauser / password