The “Google Play authentication is required” error is a surprisingly common problem on Android devices. The post will show you how to fix this Google Play authentication error in three easy steps.
1. Simply remove your Google account
The first trick is to go into your phone’s main Settings menu and then Accounts and simply remove the Google account you have registered (the one that’s getting the “authentication is required” message). Once you’ve done this, you can re-add the account and it should work just fine. However, you may need to do this step along with the second step below.
2. Clear data from the Google Play Store
To clear data from the Play Store, you need to go into Settings and then Applications and find the Google Play Store. Tap it and than select Clear data.
Have you suffered from the “authentication is required” error in Google Play before? How did you solve it? Let us know in the comments.