When installing and or upgrading Security products, it is required to restart the system to apply all security feaures. If Windows clients have Fast start-up enabled, a shutdown is not sufficient to apply these changes and enable all the security features.
To enable the new or upgraded security feaures a real restart is required or a shutdown with fast start-up disabled.
Administrator applies an upgrade of Endpoint Security to a client. When the installation/upgrade is completed the protection status of the Security product will display a warning that a restart is required. If the end-user clicks the restart link in gui of the security product the system will restart and apply the changes.
If the end-user ignores the warning and does a normal shutdown ( with fast startup enabled) end of day, the restart required warning stays in place, because the system did shutdown fully due to the fast-startup setting.