First off I've read the sticky over the MTU topic already and followed the steps. I've also gone through the entire "Can't Connect to Xbox LIVE Solution" to no avail.
I was watching Netflix on my Xbox when it dropped connection and told me I was no longer connected to LIVE. This happens on occasion, so I restarted my system an router and then the whole MTU ordeal started. I'm still able to access the Internet via computer with no problem, I used my PS3 to access Netflix and tried a couple of games online as well with no problem.
This is the first time I've had this error message show up. I've had the same cable modem and router for 2 years with no issues until now. And they are still working with ever other device I have and my plan or status with my internet provider has not changed.
What Country/State/Province do you live in?
Modem brand & model number:
Router brand & model number:
Network Connection Type: Wireless/Wired
Things you have tried:
Followed in entirety the MTU Sticky.
Followed the "Can't Connect to Xbox LIVE Solution" Wizard.
Directly connected Xbox to router.
Reset All devices and connections
Checked all cables and cords were connected
Set Xbox to DMZ on router
MTU setting on souter is listed as "Auto" with max MTU setting at 1500.
Is UPnP Enabled? Yes/no/Unknown
It is enabled, I have also disabled it and re-enabled it.
Is NAT Type Open?
Any Error Codes you encounter:
MTU error when connecting from router.
When connected directly to router I recieved no error message but still was told "unable to connect to LIVE"
What type of internet do you have? Cable/DSL/T1/3G?
Who is your ISP(Internet Service Provider)?
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 suffiecent MTU setting. Xbox LIVE requires a minimum MTU setting of 1364.