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    Available OPC UA backend fails to load

    Solved General and Desktop
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    Hi, I faced the same problem, failed to load OPC UA plugin:
    qt.opcua: Failed to load OPC UA plugin: "open62541"
    qt.opcua: Available plugins: QList("open62541")
    Could not create client

    I solved by putting libcrypto-3-x64.dll in the output build directory. Open62541_backend.dll depends on libcrypto-3-x64.dll, you can check it by using Dependency Walker tool.

    My env: Qt 6.6.0, MSVC2019 64bit.