You likely are not installing this on a brand-new Windows 11 machine for a greenfield project. You are likely:
Most classic OPC DA clients require .NET Framework 3.5 to be active for core communication services. factorysoft opc client install
: While FactorySoft has historically focused on OPC Classic, modern industrial standards are shifting toward OPC UA. Users looking for native, cross-platform UA support might find these toolkits more limited compared to newer frameworks like Open Automation Software You likely are not installing this on a
: The installer may prompt you to install the OPC Core Components from the OPC Foundation. Accept this step , as these redistributables are essential for any OPC DA/HMI communication to work on Windows. factorysoft opc client install