We tried upgrading to GOLD but it will not allow the other to sign in as a guest. Recently - I'm assuming with the latest update we are no able to play online. At first my boyfriend and I would play local coop online - even though neither of us had gold we were still able to play. I've been playing Left4Dead 2 backwards compatibility on my Xbox One since it was released. Please refer to our self-help content for additional assistance. Due to high volumes, response times in the community may be delayed over the next few days.
