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Same thing happening here. Was working fine on my iPad (3rd gen) and iPhone 4 all day at my office. But when I got home, I got this issue on my home wifi network. I thought maybe it was because my office uses WEP encryption and I have WPA2 at home. Tried changing my settings to WEP on my home router, but got the same issue. anyone know what's going on???
 
To all those asking how can something like this be missed in testing, the answer is: simply, because it is not an OS issue per se. As it was explained earlier in the thread, iOS relies on pinging a certain page on apple website to determine whether your network requires additional authentication. Since the page is currently removed, the OS is not getting the response it wants and shows you the log in window, displaying the page that normally would contain the authentication forms. Since there is no such page, you just get a 404 from Apple's own website. Nevertheless, this still sucks. Parhaps one way to try tor esolve this would be to actually create a guest network reuqiirng authentication.

So should it be a easy fix and you think something they'll do by tonight?
 
very strange bug....iPhone 4 is getting this issue but iPad 3 is fine

perhaps because that one was still running before it happened? here it just started after rebooting devices, the one iphone that was still working didn't get the issue until i restarted wifi
 
same thing... but, only with my Airport Extreme...

Anyone has this problem with other routers ??
with my other routers (buffalo, dlink, etc) it's working ....
 
so when this server is down the iPhone defaults to not working?!?!? This is annoying. Obviously same problem with my 4S
 
Looks like we must wait until the webmaster fixes the apple test page.

By the way I tried to reset the network settings in the iphone and that obviously did not help.
 
perhaps because that one was still running before it happened? here it just started after rebooting devices, the one iphone that was still working didn't get the issue until i restarted wifi

Either that or a device *already connected* is OK.

I only saw the problem when I picked up my iPhone and 'woke' it up (thus causing it to connect back to the network again).

I'm hopeful that as the problem appears to be something at Apple's end, they can - hopefully - quickly fix it.
 
I tried forgetting my home network and re entering it to no avail.. worked for like one second but the same thing came up again.

However, happy with most new things about the update :) im sure it will be fixed soon... so many people have the issue, we all have to just be patient now.
 
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