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Hello I'm currently working on a communication architecture OPC Server (RSlinx Gateway or MatrikonOPC driver Rockwell in virtual machine) / Client (DAQFactory Host) through a local LAN, there is communication between the host and the virtual machine (check with PING, firewall are off), however, DAQFactory does not show the computer where the OPCServer is (fig1). How can I solve the problem? NOTE: I haven't done the DCOM security configuration, but I understand that the name of the computer must appear in the OPC selection tree