Great news! I am happy I was able to help and thank you very much for sharing the final solution.
I have a problem using this exact configuration. I am able to connect to OptoOpcServer and read and write tags using Labview Classic OPC, but after a random amount of time, I get an error and the VI quit. During the time the communication is working, the system is flawless, but it just quit sometimes.
I have attached the pop-up error screenshot, the .evtx log file from window event viewer and the application error log is below. Any help is very welcome.
Thanks in advance.
Did you ever find a resolution to this exception 0xc0000005 in your event log? We are having the same issue with OptoOPC 22 version 126.96.36.199. An intermittant error dialog pops up and we have to dismiss it in order to resume normal execution of the OptoOPC Server.
The only work around is to identify the popup dialog and kill the associated optoopc.exe process.
I stop using OptoOpcServer all together and did an standalone application in the Opto22 brain that I was using. Zero problems with this approach.
My best bet is a bug in the interface module. Not up to us to troubleshoot