My home wireless network allows my Xbox to sign in using the WPA2 passphrase, but it does not assign an IP address. I have check that DHCP is turned on, that MAC filtering is off, tried the wired ethernet connection, and basically went through the entire trouble shooting thing built into the xbox. I'm begining to think the xbox is defective.
I have answered the recommended questions below to help facilitate an answer:
What Country/State/Province do you live in?
USA, Ohio
Modem brand & model number:
2Wire
Router brand & model number:
Netgear WNDR3400
Network Connection Type: Wireless/Wired
preferably wireless, but i tried both
If Wireless, what type of encryption are you using?
WPA2 but i also tried without encryption. same result.
Things you have tried:
Is UPnP Enabled? Yes/no/Unknown
Yes
Is NAT Type Open?
I don't know what this is and cannot find a NAT type setting in my router.
Any Error Codes you encounter:
What type of internet do you have? Cable/DSL/T1/3G?
DSL
Who is your ISP(Internet Service Provider)?
AT&T RoadRunner
When you run "Test Xbox LIVE connection" what is the exact message shown on screen?
Can't obtain an IP address from your router or modem. Turn your router or modem off and back on, then wait 30 seconds. (I did this several times)