Hello community, did anyone happen the problem that TiaPortal (V17) could not find the Opc Ua Server that is on our PLC? Via UaExpert it was able to find and connect to it, but via TiaPortal it can’t. If the OpcUa Server is created in Simulation, client connect to server via TiaPortal. Is there anything else that needs to be done besides enable Opc Ua in the configuration? Thank you
Hi Martin, checked this post. https://support.industry.siemens.com/forum/cz/en/posts/no-opc-ua-server-application-found/284417 If UAExpert is able to connect then problem is very likely in configuration on TIA portal side. Check security configuration…
Have you tried to create an OPC UA Default view file in Configuration tab Connection folder?
https://help.br-automation.com/#/en/4/communication%2Fopcua%2Fdefaultview%2Fopcua_defaultview.html
Enable some tags in this OPC UA Default view file download and try again.
Thank you. Other OPC clients was tested and only Tia Portal has the problem 
Did you try with an ip-address, or only with a Browse action?
Are you able to make a Wireshark trace off the TIA portal connect action?
The Hello and Ack message sometimes give information about the reason.
Sometimes it is interpretation issue of the OPC UA protocol like NULL or UINT16=0.
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Hi Martin, have you found solution for your problem? If so, can you share it with us or marked answer that helped you the most?
A post was split to a new topic: How to read value from B&R OPCUA server using TIA portal