ManageEngine Desktop Central performs all desktop management activities via Desktop Central Agent. If the Desktop Central agent present on the client computers is not active/reachable, then Desktop Central server will not be able to manage the specific computer. Desktop Central agent is designed in such a way that it contacts the Desktop Central server once in every 90 minutes to receive the updates/tasks from the Desktop Central server/Distribution Server. When the Desktop Central agents do not communicate with the Desktop Central, you will have to manually troubleshoot the reasons and get them fixed. Desktop Central has automated this process, and has introduced a tool for troubleshooting the Desktop Central agent.
This tool will be available on the Desktop Central agents. You can establish a remote connection with the target computer and initiate the troubleshooting process by clicking on the Desktop Central's Agent Tray icon. Right click on the "Agent Tray Icon" and select Troubleshoot. You can see a new window opens, you will have to click on "Start Troubleshooting button" to initiate the process. Alternatively, agent troubleshooting tool can be accessed by <Installation_Directory>\DesktopCentral_Agent\bin\agent_troubleshooting_tool.exe. You will find the details as mentioned in the screen shot below:
This tool will run through the primary checks to verify the status of the Desktop Central Agent. The following information will be verified and detailed summary will be listed.
You will get a detailed report which will explain the status of the connections and error messages, with the link to appropriate Read KB articles to get the problems resolved. You will be asked to contact Desktop Central support with the logs, if the problems could not be resolved based on the given guidelines.