In the Android > Sample app > Trivial Drive when running the app I get the following when doing an IAP:
Error - Authentication is required. You need to sign into your Google Account
I've switched to a separate account on my phone with the testing account (i.e. the testing email address I've specified in the Developer Console) and followed all the steps here:
https://android.stackexchange.com/questions/20369/getting-authentication-is-required-when-trying-to-access-the-play-store
but no joy.
Any further suggestions?
==== UPDATE
I've since blasted away all Google Accounts on my phone and now have just 1 account - i.e. the Testing account.
And I've tried everything here: https://android.stackexchange.com/questions/20369/getting-authentication-is-required-when-trying-to-access-the-play-store
Simply remove your Google account 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. Once you've done this, you can re-add the account and it should work just fine.
How can you fix Google sign-in error on android phone? Some of the solutions to this error include disabling the 2-step verification process, removing and adding your Google account, and restoring your device to its factory settings.
How To Fix "Authentication is required. You need to sign in to your Google Account" On Android Devices ? Step 1: Go to the Settings of your phone . Step 2: Tap on Accounts ,and then Tap on Google . Step 3: Tap on Google Account and Remove the Google Account that you are having problem with .
There is actually no definite reason as to why you are getting an error message"authentication is required" when you are trying to access or download an app. There are instances that things get corrupted over the time being that you are using your Google Play Store.
The “Google Play authentication is required” error is a surprisingly common problem on Android devices. It makes you realize just how much you rely on Google products for your smartphone activity, especially the Play Store. The good news is that it’s a super easy problem to fix.
Simply remove your Google account 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 and simply remove the Google account you have registered (the one that’s getting the “authentication is required” message).
I believe that Google now requires that the app is published as alpha version and a Google group specifically for testing is set up. I wasn't able to find this information in the official documentation (which means that Google probably didn't update it in quite some time), but here: https://help.gamesalad.com/hc/en-us/articles/203536123-7-6-In-App-Purchases-IAP-for-Google-Play
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