Hey, been trying to play halo since it updated and any time I try to play multiplayer I get message saying can’t connect to lobby service.
Bad enough I could never play TMCC but now on this
Same here, I’m having the same problem as you have today. I was trying to play co op today and I keep getting error message red screen saying can’t connect to lobby service and I tried warzone keep getting error message.
+1 this
+1 from me too. I’ve been unable to connect to the lobby service for over 24 hours now.
+1 > I as well cannot connect… things were fine one game and cant connect the next. I am sidelined 
Me too since friday! I want to play SO DAMN BAD RIGHT NOW!
+1 Cant connect to pretty much anything halo 5 related.
Also +1, was hoping to get some Halo in before the Hawks game today but I can’t even get to the lobby menu. As soon as I sign in with my profile it throws “Attention: Error authorizing user with Halo5: Guardians services. You will be unable to access online modes.” then kicks me back to a blank main menu with only the option to sign in.
Same here. I can’t play any mode aside from single player. It happened since XOne dashboard update and applies to H5 and TMCC. So anyone knows if 343 is doing something about this?
I cant even get mine to update goes over 3000% so i delete it try to redownload it thinking maybe it would help but nope now i cant even get past 1% in just stops as soon as i start it 
im getting super crazy mad its no joke right now
I keep getting kicked from my fireteam and disconnected from the game, warzone, arena and custom games. Also the message of the day keeps freezing me at the loading screen. No problems before the latest update. We were trying to run a 8 player fireteam last night and could not keep more than 4-5 people in for more than a game or two, had to constantly set up a new fireteam, restart Halo 5, restart console.
I have the same problem since dashboard update. Can’t connect to lobby service… Every other game works fine in multiplayer i tried many things:
deleted the whole game and redownloaded, same with gamertag. Made explicit port forwarding etc. etc. nothing worked… There has to be a problem with the halo accounts at 343 industries. Very, very annoing. I bought the console to play halo 5 multiplayer and now this… Its very frustrating. There are no statements from the developer to this issue. There are lots of people having issues with lobby service and nothing happens…
I checked my connection and xbox dashboard is saying there is a problem on their end really annoying was just getting into BTB after avoiding it cause of no JIP. I was getting medals I didn’t know existed then poof dc central.