Hi there and welcome
Can you please hold the power button on the Tab 4 until you see a menu, then choose Power Off.
Once done, power it on again and tell me if it now operates correctly.
Let me know the results please.
ok, are you able to go to Settings on the Tab or the error stops you?
ok, can you go to Settings, Manage Applications, then go to the list ALL and locate Google Services Framework.
Press it and press it Clear Data.
Once done, restart the Tab and tell me if it still gives the error please.
ok, press Storage and you will see there Clear Data
Is it showing for you?
Clear all data please
restart the Tab and tell me if you still get the error please
ok, you will need to do a reset of the Tab, this is going to clear all your data (photos, music ect) and return it to new, but you cannot avoid this sorry.
To do the reset.
Go to Settings, Backup & Reset, Factory Data Reset.
Let this complete and when it has, setup the Tab again and tell me if it clears the error please