After a new Cloud Agent is installed, you may notice that the Cloud Agent is not reporting to Qualys Cloud Agent user interface or observe an older last check-in time for the existing agent.
For common errors for Cloud Agent for Windows, refer to Communication Errors—Cloud Agent for Windows.
For common errors for Cloud Agent for Linux, Unix, or MacOS, refer to Communication Errors—Cloud Agent for Linux.
For common communication errors reported by the Cloud Agent connection service, refer to Common Connection Errors - Cloud Agent Service.
Inspect the log files. For more information on log files, refer to Troubleshooting Information. It is recommended to navigate to the last entries logged to get the current health/status of the Cloud Agent.
You can use the Cloud Agent log analyzer to analyze the logs. For the log analyzer tool, check here.