Windows 7 FF works IE doesn't


New Member
I am currently connected to my school's network.
It is protected with WPA-PSK. I got a weird problem with it.
Internet works on Firefox but doesn't not work on IE. Asking win7 to fix it will not help. I will ethier say the problem is fixed( in reality, it is not fixed) or it can't find any problems with the network.
I can't sign in to my windows live as well. Clicking troubleshoot gives a "key port" error.

The gatewway is a govern by a software called sonicwall.
Vista or XP doesn't not have this problem.

I can do basic diagnostics but i don't know where to start.
however the inability of IE to work also affected windows live. Therefore i am keen for IE to work again.