MP Hosting problem!!!

[darksoul]

i have problem hosting game in COD, Error message appears when i click OK --> Steam has lost connection, exting & steam error

does anyone know whats problem, and i have tested with firewall OFF

and i have lastest Beta patch installed

[darksoul]

i tryed creating lobby game and server game. result was a "Steam has lost connection" error (lobby & server)

i dont know is steam kicking me out, single player is working ok, havent tryed joining to other MP servers

EDIT:

Joining to Mp servers seems to work

[Ataros]

Try flying online for an hour or more, see if you get the same error.

I assume you are not shutting down Steam after launching server. Try checking your connection to Steam maybe your provider looses some packets on the way to/from Steam or not all ports are open. Steam FAQ lists all necessary ports. If your provider put you behind a router you can host only in Lobby, not in Server room.