Facebook, Google OAuth fails sometimes on Azure

Question

I am using Asp.Net MVC OAuth login with facebook and google and strange thing that at some period it doesnot work

var externalIdentity =
                HttpContext.GetOwinContext()
                    .Authentication.GetExternalIdentityAsync(DefaultAuthenticationTypes.ExternalCookie);

var loginInfo = await AuthenticationManager.GetExternalLoginInfoAsync();
if (loginInfo == null)
{
   return RedirectToAction("Login");
}

Seems here it cant get user info and redirect to login page. I cant figure out why or what can cause that. I also have two slots beta and production.

So any suggestion or maybe somebody already have that and found way how to fix that?

You may have different Website URL Register on Facebook For Test and production application have you check this URL — Saineshwar Bageri - MVP, Mar 24 '16 at 06:22
@Saineshwar facebook and google will show error that sorry you try to redirect to wrong url or smth like that, and it works at some period of time — Vova Bilyachat, Mar 24 '16 at 07:40
Please check this :- http://stackoverflow.com/questions/14218062/google-oauth-login-works-locally-fails-on-production-server?rq=1 — Mohit Verma, Mar 28 '16 at 12:01
@MohitVerma It was first what i did since I remember i had issues with AzureStorage and problem was with time. So unfortunately its not this one :( — Vova Bilyachat, Mar 28 '16 at 15:43

Vova Bilyachat · Accepted Answer · 2016-07-30T06:25:06.233

Finally after few weeks i solve my problem. Its really something strange and probably issue is because of azure, since beforemy implementation works on VMvare for 6 month.

in AccountController there is method

public ActionResult ExternalLogin(string provider, string returnUrl)

add there

Session.RemoveAll();

PS/ Firstly when I have seen this recommendation I did not understood how it can help but then next time when OAuth fails i just simply restarted WebApp and it starts working. By the way even now i dont understand what is going on with session but it works.

Facebook, Google OAuth fails sometimes on Azure

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