Are you having trouble connecting to WiFi after updating to iOS 6? You are not alone. We’re seeing reports in our forums and on Apple’s forums. When attempting to access a webpage in Safari, your iOS device would attempt to access an Apple.com page that does not exist. It’s still unclear as to what’s causing the bug, but a good number of folks are prescribing this fix:
Update: According to @tylerc, iOS checks the following page on Apple’s site to see if WiFi requires login. The page was drawing a 404-not found, thus resulting in the error. With the page now working, the issue should be resolved
Settings > Wi-Fi > (Network…) > “Blue Circle Arrow”
Scroll down to the bottom of the screen and set:
HTTP Proxy to Auto
Having the issue? Does this fix work for you? Let us know in the comments or in the associated forum thread.