Hello, In my case all was ok on the BeagleBone side (OPC server) but wrong on the client side (was OK with UA Expert who manage properly its own certificates. I finnaly removed all security settings
thank you rshabsh
After hours of checking everything, my OPC UA connection problem origin seems to be a missing OPC UA certificate on my server (Beaglebone Black linux debian). If a remember well i have "cleane" certificates in Security agent window (device tab). Impossible to find the right way to correct this !
I have the same problem, did you solved your problem ? in my case it's seems to be becaune "no certificate for OPC UA server available".
Using CODESYS 3.5 sp19, i created my variables in OPC UA server and getting my UA expert ready with the CER certificate generated by my device in CODESYS (cer format). Good ! But now, as my OPC UA client is in reality my ETIC RAS-E-100, I need a OPC UA certificate in PEM format (txt format). Can't find where to search or generate or convert from cer one. help wanted !