If the previous step (the fresh sync) didn't work for you, try again after clearing cache and data - it could have better results.Ĭlearing the cache works as a solution for many people. Tap on Clear cache or Clear storage (You can try just clearing the cache first, if you like, but clearing data will clear the cache as well).Scroll to find Google Play Store and tap to open.Open Settings, tap Apps and then select All apps.To clear data from the Play Store, you need to follow these steps. Then you can go back to the Play Store and see if the authentication message is gone. Go to your Settings, tap Accounts & sync, find your Google account, tap it and select Account sync. It's possible that things aren't syncing for some reason, and just need a little push. You should see your Gmail where the blank white line is. However, you may need to do this step along with the second step below. You can also restart your phone before re-adding just in case. Once you've done this, you can re-add the account and it should work just fine. The error may simply be a sign-in issue, which sometimes occurs when the Play Store is updated. The first trick is to go into your phone's main Settings menu and then Accounts & sync and simply remove the Google account that is getting the 'authentication is required' error. Uninstalling updates rolls Google Play back to its default version. Then, all you need to do to fix the error is install the latest version of the Google Play Store and sign in once again. This will take you back to the original version of the Play Store that was installed on your device.

Then simply hit Uninstall updates by tapping the three dots at the top right corner. Be careful to select Google Play Store, not services. Go to the Play Store in Settings > Apps > All apps > Google Play Store. Sometimes the problem is not with your credentials but the Play Store itself. Use your mobile browser to download the app.We've outlined the following methods below. There are several different ways to go about solving this problem, from simple data clearing to the more drastic factory reset as a last resort.

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