Originally posted by: NightDarker
Originally posted by: Gooberlx2
Also double check the default media settings for all devices vs any possibly customized media settings for the 360. As well, make sure the network is designated "private" and not public by accident.
Also just try hitting block all, and then allow all. I dunno, maybe it'll reset something.
Where can I find this?
Network and Sharing Center.
You network should be listed as either "Home Network", "Work Network" or "Public Network". If it's public, I'm fairly positive it needs to be changed.
Most likely MS doesn't want you streaming your media to everyone at your local Starbucks, which would ideally be labeled a Public network. As well, they don't want needless ports and services open to the wide world, just waiting to be exploited.
If it still doesn't want to work, peruse through the Event Viewer to see if anything stands out.
Beyond all that, I would be at my wits end as well. Possibly someone else could help, or check the xbox.com forums if you haven't.