Last Boot Time field empty in Service Desk Plus for an asset

Last Boot Time field empty in Service Desk Plus for an asset

Does the Desktop Central Agent scan when a PC was last booted? I see a field called "Last Boot Time" in Service Desk Plus but it is empty for a PC with the agent installed. However, when I look up that same PC in Desktop Central, it shows when it was last booted. (We use the free version of Desktop Central)