Due to conflicting NAT settings..

[[TW]Fox]

...you cannot play Forza, hahahahahaha.

Or words to that effect. This is driving me up the wall.

I have:

a) Disabled uPNP
b) Enabled uPNP
c) Manually mapped the Xbox live ports to my Xbox
d) Placed the Xbox in the DMZ

NOTHING seems to fix this issue which has only today started happening. I cannot connect to any Forza lobbies without this error.

Any ideas what to do? I have an O2 Access Box IV.

 

[[TW]Fox]

I've not thought of fiddling with the Xbox. I assumed the blame was squarely at the feet of the router. Will try the Xbox this evening!