Google Play store authentication error is a very simple problem associated with play store that can be fixed in a moment following some tricks. The processes are discussed below.
See also- How to fix Google Play store error 24
Ways to fix Google play store authentication error
First method: Remove and add your Google account
Sometimes android users face this error due to sign-in problem while the Google play store is upgraded. So first go to Settings > Account > Google > Remove Google account. This should be the account that is giving you error message. Now again add the account. Most probably it will fix Google play store authentication error. You can try to download or update any app now to check this.
Second method: Clear cache and Data from Google play store
If you are not happy with the first method and still facing the issue, then perform the second method to get rid of the problem.
> First go to settings.
> Tap System settings.
> Select Manage Application.
> Tap ‘All’.
> Scroll down to find out Google play store.
> Click on that and press the button Clear cache and clear data one by one to remove the cache and data from the play store.
You can try the first method first and if the result is unsuccessful, then reboot your phone and go for the second method to fix Google play store authentication error.
Third method: Uninstall Google play store updates
The third method requires you to uninstall the Google play store updates by going to Google play store from settings and then click app, remove updates. Once the updates are removed your android phone’s Google play store will be back to the version that was installed in the phone. Now install the latest version Google play store and start with sign-in again.
All the above tricks are simple and easy following which you can very easily remove the play store authentication error.