Why is my Google Play Store not responding?

[Android Central Question]

I have been trying to download an app from the play store, and this is the feedback I get. "Authentification required. Please sign in to your Google account "

 

[methodman89]

I have been trying to download an app from the play store, and this is the feedback I get. "Authentification required. Please sign in to your Google account "

Have you switched Gmail accounts or have more than one? Sign out of them all, and sign in to the one that is requesting it.