Coop Issues With Joining Friends in Players Helping Players Posted November 3, 2018 · Report reply Ok guys I need to give you all an update. So my buddy and I had the same issues everyone else has had but we managed to get it to finally work. Here is what we did: we set set game to public turned off zombie invasion uninstalled all DLC so only base game remained. ( very important) then turned off game then and This seemed to be the most important but needs to be done after the rest; we HARD reset the Xbox. For those of you who don’t know how that is done you need to hold the power button on the actual machine for 5 seconds until the entire machine shuts down. It’s not a soft reset like using controller. we rebooted machine and turned game on and we were able to join each other without problems. Hope this helps everyone else!