So, what’s going on? It seems like I’m having Xbox Live issues as well on both of my Xbox One consoles? Try to play FM5 and it won’t update? Anyone?
Have you tried these troubleshooting steps?
http://forums.forza.net/turn10_postsm67044_Forza-Motorsport-5---Game-FAQ.aspx#post_67044
After replacing a router (which needed to happen anyway) and many hours on the phone with Chris from Xbox Support, and a 3-way conference call with tech support from Time Warner cable, I finally got back online late last night.
Turns out, the problem was that one of Time Warner Cable’s DNS servers was offline. None of us were aware of this until this morning when Xbox Support gave me a follow-up call with new information. I have set my DNS settings back to automatic, BUT, if I have this issue again in the future, I will manually change my DNS settings. If anyone else has had similar problems of suddenly not being able to get online, PM me and I’ll walk you through what I did to see if this is in fact the issue you are having.