For me after resetting the modem it works for 2-3 games before going back to "connection interrupted" every game. Your connection to the game session was interrupted." I had the Reach cooperative campaign working with one friend. Your connection to the game session was interrupted." Halo 2 Anniversary PC Co-Op Campaign "Connection Interrupted" Hello, My friend and I have been trying to play halo 2 on the PC and we cant progress very far without one of us getting kicked, and reviving a "Connection Interrupted" message. I purchased this game to play with my friend on co-op - and co-op simply doesn't work (too much lag, frequent disconnects, etc). Who cares about XBOX Live on PC?! The four playable characters in Halo 3 ' s Co-op mode, from left to right: Usze 'Taham, Arbiter Thel 'Vadam, Master Chief John-117, and N'tho 'Sraom.. Trying the pillar of autumn mission on Halo CE the "connection was interrupted" message keeps coming up. How to fix Halo 3 campaign co-op connection issues PCWorld. Still annoying though. I asked support why we kept getting "connection interrupted" when trying to start co-op campaigns on Halo: CE. Someone on the Stema forum theorizes that loading the missions first in singleplayer loads data in memory that a co-op connection requires in order to work. "CONNECTION INTERRUPTED. Has the campaign been tested properly? It's a Steam game for God's sake! One of us using an IP hider solved the problem for us, hope that helps. Tired installing the language pack dlc then verifying the files, neither worked. Having this problem on Steam copy of CE as well. (It should be noted the "Teredo" feature ALWAYS needs fixing every time I start my PC) This has been constantly happening to me for the past few days, can't play a single match in any of the games, and this was not happening for me until this recent update, bugging the life out of me, Update: still not working at all! Ok so Im not a network wizard. me and my friend have a separate copy, steam account and computer to play on. I've experienced this same problem. Why!. "CONNECTION INTERRUPTED. Happens with Halo 5 too. I hope more people find this. I make it work, I don't know if was opening the ports because I try a lot off stuff. This is the weirdest issue I have encountered on PC, for some reason it only afflicts certain people and occurs randomly. Turns out that their response about "open NAT" settings had some merit, because that's a rating Xbox game services can give your network.. And if you're playing LAN, you can only forward to one PC, so it's UPnP or bust. We were able to play online multiplayer and even a bit of Reach co-op but that gave us some problems as well. Apparently this is a thing with Xbox games in general. No problem - we can play multiplayer together. I still think it's stupid to need this working for LAN co-op, but I read somewhere in the release notes that the devs had no intention of revisiting the Halo CE network code, and I guess that's a limitation they won't be able to fix. I'm having the same issue with my friends.I have Consolidated internet, this is the only game that does this. But...why? Press question mark to learn the rest of the keyboard shortcuts, that's a rating Xbox game services can give your network. Yeah I'm having the same issue with my roommate and we have Spectrum. Close. Once I fixed that, co-op worked. Co-op is a multiplayer gametype found in all Halo games except Halo PC and Halo 2 Vista.It allows two or more people to play the Campaign together.. Didnt use to be like this. If you've ever lived with other gamers (and played the same multiplayer games), you'll recognize this.