msegon - 4 days ago

Hi everyone,

I would appreciate your help with a problem I've been working on for a few days but haven't been able to resolve.

I'm trying to read data from Tridium Niagara 4.15 OPC UA Server, but I get the error BadCertificateInvalid. As far as I understand, you need to add a CA certificate somewhere to establish a secure connection, but I don't know where.

2025-10-27T09:06:43.247Z, 0x0000008d, 4, 0, 0, * ERROR: OpcUa_Channel_BeginConnect: Cannot create secure channel without certificates!
2025-10-27T09:06:43.247Z, 0x00001090, 4, 0, 0,
* ERROR: Datasource: Error Failed (268468242) in state Connecting

I tried communicating without encryption, but it doesn't find the point.

Has anyone managed to establish encrypted OPC UA communication?