The firmware checks a URL to when connecting. If it doesn't respond, or the results are wrong, it won't connect. There has been discussion on how to avoid this. But, as of the 4.9.x firmware, there is an option to ignore this check. Add the following to the config file on the device:
Code:
[FeatureSettings]
IgnoreCaptivePortal=true
If you already have a "FeatureSettings", just add the other line after it. And if you are using Windows to do this, make sure you use a Unix line-end aware editor such as Notepad++.