If the issue is webpage authentication. I have work out a solution. I travel a lot and stay in hotels as a result. A lot of these hotel offer wifi service but they require you to authenticate via a webpage. Since the xbox dose not have a web browser (this is unfortunate) authenticating via a webpage is not possible and will fail every time. However these authentication systems rely on the devices MAC address. You will notice that when you authenticate a device once than you can disconnect and then reconnect without authenticating again. This is because the authentication system remembers your client devices MAC address. To implement a workaround you have to ensure your xbox is not attempting to connect to the system. Go to system setting > network > configure network > additional settings > advanced settings to find the MAC address assigned to your XBOX. Next thing you do is change/spoof the MAC address on another device to the MAC address assigned to your xbox. You than connect and authenticate using the spoofed device using the webpage authentication method required. You than disconnect this device and change the MAC address back. Than you connect you xbox to the network. The network authentication system should see the same MAC address and not issue a challenge and allow the connection.
Alternatively you may change the MAC address on the xbox to a MAC address of an already authenticated device. This would require you to change the MAC address on the other device however so that there is not a layer 2 conflict. I menton this method to be complete about it I don't wanna get a bunch of winers telling me how I could change the MAC address on the XBOX and that I didn't menton that. This method will work but is more of a pain in the ass because now your are swapping MAC addresses around on two devices instead of two changes on one device. Whatever hope you all understood all of that and happy gaming.
