Netflix Error UI-400
If you experience the error code UI-400, it typically points to information stored on your device that needs to be refreshed. Follow the troubleshooting steps for your device below to resolve the issue.
Go to the Netflix home screen and press the back button
on your remote to get to the menu.If the menu is at the top: Go left to your profile icon, select Get Help, then Sign out, then select Yes.
If the menu is on the left: At the bottom, select Get Help, then Sign out, then select Yes.
Sign back in, then try Netflix again.
If your device is on an error screen:
Select More Details.
Select Sign out or Reset.
Sign back in, then try Netflix again.
If you can't find Get Help or Sign out:
Using your remote, press these buttons in this order: Up, Up, Down, Down, Left, Right, Left, Right, Up, Up, Up, Up.
On the menu that appears, select Sign out, Reset, or Deactivate.