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EasyOpcUADemo Unable to Connect to KEPServerEX - by: gkalipershad

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Z,

I wanted to get your input on this customer situation.

OPC Data Client V5.41.1036.1
Visual Studio 2019
.NET Framework 4.7.2
KEPServerEX is the OPC UA Server

I first want to acknowledge that he is using an older version of the toolkit on an newer VS version and newer .NET Framework.

I have attached a screenshot of the EasyOpcUADemo app when it tries to connect to a remote KEPServerEX. I am surprised that the error message is so short. I have seen "The specified network password is not correct" before, but it has always been in the context of a much more detailed error description.

We had him install KEPServerEX on the local machine 2 perform 2 tests:

1. Does the EasyOpcUADemo display the same behavior when the KEPServerEX is local? The answer is yes.
2. Can the KEPServerEX OPC UA Client Driver connect to the remote KEPServerEX OPC UA Server? The answer is also yes.

There is no OPC UA Security policy enabled and I am having him confirm for me whether he is allowing anonymous login from the OPC UA Server. I would assume yes if KEPServerEX to KEPServerEX works.

He did confirm that running the EasyOpcUADemo app as administrator works, but that is not a suitable solution for him.

I am wondering if you have any alternate suggestions or if you know what he might be able to do to avoid having to run the app as admin. Any assistance would be greatly appreciated.

Thanks,
GK

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