You may see that the number of endpoints displayed on the web console is incorrect.
This happens if you retain endpoint records in the database after uninstalling the Security Agent. For example, if endpoint-server communication is lost while uninstalling the Security Agent, the server does not receive notifications about the uninstallation. The server retains endpoint records in the database and still shows the endpoint information on the web console. When you reinstall the Security Agent, the server creates a new record in the database and on the web console.
For more information, see Configuring General Settings.