Netflix Error MSL:5403;
You might be seeing error MSL:5403 on your iPhone or iPad with the message:
Cannot play title. Please try again later. (MSL:5403;)
This error happens when an issue with data stored on your device stops Netflix from playing.
To fix the problem:
If you've tried the steps above and are still getting this error, it means your account isn't connecting to the Netflix service. Please wait and try again later.