Datto RMM: Device Status Showing “Online but Cannot Connect to Webport”



When viewing devices, the status shows as online but cannot connect to webport. Additionally, you may encounter monitoring issues, especially related to performance counters.


  • Datto RMM


Verify services

On the affected machine, click the Windows icon, type services, then click the Services desktop app.

  • Verify the aemagent.exe service is running.
  • Restart the centrestage service.

Check the version and update status

  • Verify the current version of the agent is installed, and that an older version has not failed updates. If an update failed note the error.
  • Uninstall the existing agent and install the latest version.

Audits and health checks

  • Ensure the issue is not related to application control or packet filtering within the firewall.

  • Run the Health Check tool to exclude whitelisting as a possible issue.
  • Collect Health Check results, including and send it them to Datt RMM Technical Support

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