Since there are other ways to get the status of the connection and fixing this may entail reinstalling the OS the fix can be worse than the problem. Why not learn how to get to the panels you want in other ways?
Bob
I am connected. It shows I'm connected. And I even have the correct icon (a past issue). Everything works just fine....
...except that left clicking the icon does nothing now.
I just want to open the "available connections" information box, but nothing happens. (Right clicking does access troubleshooting and "open network & sharing" options, as it should.)

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic