I'm using Google two-factor authentication on a Galaxy 10.1 tab and receiving notification of a "Sign-in error" for my Google account.
gmail and other Google apps seemed to be working, but I went to the security settings for my account on a different computer ("2-step verification") and revoked the application-specific password for tablet. I then created a new one.
The new password works for gmail, gtalk and other Google apps on the tablet, but I still receive the notification of sign-in error.
I thought it might be one of the apps on the tablet where I'd granted access to my Google account, but couldn't find the culprit. (http://stackoverflow.com/questions/2882253/how-do-i-get-the-logfile-from-an-android-device to review log file, compare with "Connected Sites, Apps, and Services")
Can someone point me to where on the tablet I might be able to track down which app has the problem?
If you previously signed in from a device and checked the box next to “Don't ask again on this computer,” you might be able to sign in from that device without a second verification step. After you sign in to your Google Account, you can manage your verification methods.
Manage your Google Account. At the top, tap Security. Under "Signing in to Google," tap 2-Step Verification. You might need to sign in. Tap Turn off.
Click this link below, and login your gmail account.https://accounts.google.com/b/0/IssuedAuthSubTokens?hl=en&hide_authsub=1
Configure "Application-specific passwords" for you android, write a name like "My Android", and press the "generator password" button. and you see a random password.
Login your android gmail with the random password. Then everything is ok.
reference: http://www.techworld.com.au/article/407756/how_fix_two-factor_authentication_log-in_error_gmail_android/
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