Google’s free Gmail email service is currently experiencing a worldwide outage which prevents users from logging in, displaying “Something went wrong”” errors when they’re trying to sign in to their accounts. The authentication issues which started at 11:30 PT currently affect Google App Engine
Source: and Google OAuth 2.0 endpoints. The affected users are unable to access Gmail. Users who are already signed in should not be affected. Google says that the vast majority of users should no longer experience any Gmail authentication issues.”