Why can I not connect to Xbox Live?

Related questions

1. What is an Xbox Live ID?
2. Why does my Xbox keep disconnecting from Xbox Live?
3. Is Xbox Live Gold required to play online?
4. Why is Xbox Live currently unavailable?
5. Can I re download purchased games on Xbox one?
6. Why is Xbox Live blocked?
7. Can you look up Xbox gamertags?
8. What does connect to Xbox Live mean?
9. Can't connect to Xbox Live on Xbox one?
10. What does Xbox Live Gold do?

Tags

1. #causing
2. #press
3. #guide
4. #console
5. #first
6. #screen
7. #settings
8. #network
9. #problem
10. #button
11. #right
12. #connection
13. #connect
14. #select
15. #unable