What does error 4 mean on my iOS device?
Summary
If you are running into Error 4 on your iOS device, this means your session within the Hulu Plus application has expired. Fully restarting the Hulu Plus app should resolve this issue.

To restart the Hulu Plus app:

  • iOS 5 and 6 – From any screen, double-click your Home button. When the tray slides up, hold your finger on the Hulu Plus app until it starts wiggling. Tap the red button above its icon, and then tap your Home button again to finish.


 

  • iOS 7 – From any screen, double-click your Home button. When the app windows appear, swipe left or right to find the Hulu Plus app. Press on the Hulu Plus app window and swipe up. Then tap your Home button again to finish.

 

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