When I booted up my PC this morning, and if I recall, the previous morning, the tray icon had an exclamation mark and the main screen had the message; "! You're vulnerable. Some shields are turned off".
The last time I saw this message, I clicked the "Turn ON" link, and left it at that.
Now that it has happened again so soon, I looked around and found;
File Shield = ON
Web Shield = ON
Mail Shield = ON
Firewall = ON
Real Site = ON
Anti-spam = ON
Software Updater - Automatic updates = OFF
Attempting to turn it just returns the message "Online content is unavailable".
Clicking the "UPDATE" button on 2 of the 3 flagged items just resulted in "Something went wrong…try again".
Interestingly, clicking on the "Turn ON" link on the front (Status) window returns "You're Protected" and the exclamation mark goes away, but, Software Updater is still OFF.
That behaviour is indicative of inconsistency, and suggests that it was not the Software Updater status that flagged the original "You're vulnerable" message, but I have no idea what could be causing the alert status. And having an unreliable alert message may prevent a real alert condition from being paid any attention.