Run in app container causes "Fail to establish SSL connection."

I am working on plugin development using Adobe Acrobat SDK (C++) .

    if (bind(serverSocket, (struct sockaddr*)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
        return false;
    }

    // Get the assigned port
    int addrLen = sizeof(serverAddr);
    if (getsockname(serverSocket, (struct sockaddr*)&serverAddr, &addrLen) == SOCKET_ERROR) {
        return false;
    }

    DWORD assignedPort = ntohs(serverAddr.sin_port);
    std::string po = "Assigned Port: " + std::to_string(assignedPort);

    // Update the redirectURI with the assigned port
    config.redirectURI = "http://localhost:" + std::to_string(assignedPort);
    return true;

and then when I try to connect,
I get Unable to establish SSL connection when my Protected mode is enabled and Run in app container is checked. 
If I uncheck Run In app container it works perfectly fine. 
I have made sure that all registries and folders which are required are whitelisted.
NOTE: This happens only on Virtual Destop. In other environments, it works in both scenarios (checked/unchecked).

What am I missing? Is there some setting that needs to be turned on/off?