Please make sure that your device has network connectivity and the Date and Time settings are accurate. (-400)
To fix the problem on your Android phone or tablet:
From the home screen on your device, navigate to Settings.
Select General.
If you don't see General, continue to the next step.
Select Apps or Applications.
Select Manage Applications, Application Manager, or Manage All Apps.
If you don't see these selections, continue to the next step.
Scroll down and select Netflix.
If you don't see Netflix, check the Downloaded tab.
Select Storage.
If you don't see Storage, continue to the next step
Select Clear Data or Clear Storage, then OK.
Try Netflix again.
Open the Play Store app.
In the Search bar, search for "Netflix."
From the search results, tap the Netflix app.
Tap Update.
If you see only Uninstall or Open, the Netflix app is already up to date.
If the Netflix app doesn't show in the search results, follow the steps in Can't find the Netflix app in app stores.
If you don't have the Play Store app, visit Google's support site for help.
Turn off your Android. Make sure it's powered off, not just locked.
Turn it back on.
Try Netflix again.
If the date or time settings don't match the current time and your location, it can cause Netflix to stop working.
Open Android settings.
Find Date & time.
Make sure it's set to automatic or use network-provided time/time zone.
Try Netflix again.
From the Android home screen, navigate to Settings.
Select Connections.
If you don't see Connections, continue to the next step.
Select Wi-Fi.
Select the network you are currently connected to.
Select Forget.
Once the network is no longer connected, re-connect to your preferred network.
Try Netflix again.