If you see the error code 113 on your Apple TV, often accompanied by one of the following messages:
Sorry, we had trouble logging you in.
Your Netflix account name or password couldn't be verified. Please try again. Go to www.netflix.com/support for more information.
It usually means there's an issue with your sign-in information. Follow the troubleshooting steps below to resolve the issue.
Make sure the email shown on your TV is correct. If it isn't, click Previous to go back and fix it.
Enter your password again, keeping in mind that Netflix passwords are case-sensitive. Click the arrow on the screen to change between upper and lower case letters. Click Show Password to see your password and confirm it is correct.
From the Apple TV home screen, highlight the Netflix app.
Press and hold the center of your remote's touch surface or clickpad until the Netflix icon starts to shake.
Press the Play/Pause button to delete the app.
Select Delete again to confirm.
From the Apple TV home screen, open the App Store.
Search for Netflix to find the app, then select Install.
Try Netflix again.