Edge Client won't connect without reinstalling

I have a Windows 7 user that has had trouble connecting to the BIG IP Edge Client a few times over the past couple of weeks, and there's no reason displayed for why it won't connect. The window just shows "Disconnected". The solution has been to reinstall Edge Client. I'm not confident that the problem won't return so can someone help me figure out why it stops working? Is there a log somewhere that will help me figure out what's going on?