I've been around and around, tried a number of things and I just can't seem to make any progress on this. Has anyone got any troubleshooting advice for getting past the dreaded ICMP error during the connectivity test on an XBOX 360?
The test works all the way up to through the Internet connection, but the last test (Connect to XBOX Live) always fails with an ICMP error.
Also, I also get intermittent errors connecting to the marketplace and/or signing in.
I am connecting to the internet wirelessly through a 54G router.
Connecting the XBOX directly to the modem is a major hassle that will involve dragging big honking tv and the xbox to the other end of the house, so I'd prefer not to do that except as an absolute last resort.
Any troubleshooting ideas would be appreciated, for example is there an address I could ping from another computer on the network to see what is going on?
Best Answer
Looks like it could possibly be your router config. Did it work previously then stop either randomly or after an update? There's some surprisingly sane information about ICMP here (ignore the "Best Answer" and look at the other longer one).
If you know your way around a router then you could stick the xbox in the DMZ. If that solved your problem you could be pretty sure your router config is the issue and could then refine it from there.
It would be worth trying a wired connection also, if you could borrow 20m of cat 5 off someone.