Why does my iPhone say unknown error when connecting to iTunes?

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Tags

1. #indicates
2. #restart
3. #different
4. #whether
5. #always
6. #devices
7. #except
8. #cable
9. #doesn
10. #iphone
11. #computer
12. #apple
13. #error
14. #another
15. #disconnect
16. #unknown
17. #itunes
18. #works
19. #recognize
20. #peripheral
21. #connected