Check for Updates of the Carma Agent
When I right-click on the Carma icon in the System tray you should offer an entry "Search for Updates of the Carma Agent" in the context menu.
If there are no updates available, show a normal message box.
If there are updates available, open the Carma website with the scan results (the list of applications) because there you show a message at the top, that the Carma Agents needs an update and also a link to the new client (one-click-update).
Maybe you automatically log the user in (so the user does not have to enter the login credentials).
For business users this feature (checking for Updates of the Carma Agent) should be configurable.
So the administrator can allow of forbid this feature.