I have a WLC 4402 and I upgraded the s/w from 4.1 to 4.2.176 since I did the web auth on my Guest wlan does not work. I can connect to the wireless ok and when I type in a web address I should get the web auth page but I just get "This page cannot be displayed". However if i type in the ip address of the WLC in the addrsss bar I get the web auth page and it work fine form then on. The web auth page worked fine on ver 4.1. Any ideas?