Can't create Xbox profile for my family member. - Microsoft Community
8 Fixes "Can't Sign in to Xbox Live" & Related Errors
Account with Xbox | Xbox
How to Create an Xbox Live Account on the Xbox 360: 11 Steps
Having this problem, can't connect to live via 360 (I'm sure u guys are no stranger to this issue plaguing the system) give me all ur options, reset, troubleshoot, Wi-Fi, profile download.