I've never had any problems with xbox live in the past, but after returning from Xmas break I get an errors saying my box has been modified. I always get this message in step 4 of trouble shooting and have no idea why. No one that I know of has modified my box. I exchanged my box with my roommates and Live works fine on it. Only problem is that his box is old and dying and has a lot of little glitches to it - not very reliable. Anyone every have this problem before?
Its not my subscription, I found this link check it out. Appartently a lot of people are having this problem. http://forums.xbox.com/6/1765873/ShowPost.aspx#1765873
well maybe try to go to troubleshooter and wait to see then it tells you whats wrong eaither the cable, IPs messed up, u might be banned, otherwise call xbox live find number on internet.