Intermittent ASP.NET oAuth issue with Google, AuthenticationManager.GetExternalIdentityAsync is returning null

Question

I am trying to fix an intermittent issue when using Google as an external login provider.

When attempting to login, the user is redirected back to the login page ra

Answer 1

I have the same problem. I am using Visual Studio 2013 and website is on Azure. The social log in that had been working without issue stopping working and LinkLoginCallback was receiving null in loginInfo. I republished the project without code change or rebuilding and then loginInfo received correct data and all works fine. Does not make sense but there you go.