1. Simply remove the Google account
The first trick is to enter the configuration and do the math and simply delete the Google account you have registered (which is putting authentication '' required '' message) .Once you've done that you can re-add the account and you should be fine if it is a simple matter of logging (which sometimes occurs when the Play Store is updated) However, you may need to do this step in relation to the second step below .
2. Delete data from the Google Play Store
For this step you just have to enter setup and then Applications and Google.Toque Play find the store and erase data from the application (you can also clear the cache first and test the new Play Store, but the data cleansing the cache will be deleted as well) .If the previous step did not resolve your problem, simply remove your Google account, delete data from Google Play Store, and then add the account Google.También can add reboots between each step This process, if it makes you feel warm and fuzzy.
3. Uninstall updates Play Store
Perhaps the problem is not their credentials, but the Play Store.Si this happens, you can simply go to the Play Store in the configuration and the applications and '' remove updates ''. This will take you back to the original version installed on your device Store.Entonces Play, all you have to do is install the latest version of the Google Play Store and sign once more. You can, of course, mix these steps until a little too if you still have problems: delete the account from Google, rebooting, uninstalling updates, install new Play Store, reboot, add the account, etc.