What Country/State/Province do you live in? Denmark
Modem brand & model number:
Router brand & model number: D-link 655
Network Connection Type: Wireless/Wired Wireless
If Wireless, what type of encryption are you using? i dont know
If Wireless, are you using a white or black external adapter, or an internal (Xbox 360S) adapter? Internal xbox 360s adapter
Things you have tried:
Is UPnP Enabled? Yes/no/Unknown: unknown
Is NAT Type Open? unknown
Any Error Codes you encounter: Sufficient MTU setting i dont have that, but yesterday i could connect just fine
What type of internet do you have? Cable/DSL/T1/3G? Wireless 300 mbit router?
Who is your ISP(Internet Service Provider)? Dansknet
After you run "Test Xbox LIVE connection" and click on "More info", what is the exact message shown on screen?
Your network doesn't have a sufficient Mtu setting. xbox live requires a minimum MTU setting of 1364, on your pc bla bla bla go to router bla bla bla, but i dont have my router password, and everything worked just fine yesterday, and this morning.