- last post: 01.01.0001 12:00 AM PDT
You need to update you version of Halo. it could also be that the server is using an old version. in any event, its a good idea for you to update your version of Halo PC. If this doesnt happen automaticaly, then you should go to the official suport site. I think you can get there from bungie.net somehow by clicking a link on the main page.