The network preferences work a bit different compared to the other settings, as these preferences can only be edited when Network RenderingThe utilization of multiple CPUs or GPUs over a network to complete the rendering process. is disabled. Likewise, any changes on the network preferences are updated only upon re-enabling Network Rendering. The Cancel button does not really have an effect in this case. For a detailed overview of Network Rendering with OctaneRender, please refer to the Network Rendering Overview topic.