I am able to login successfully through twitter and goole but when it comes to facebook it redirects me to login url with #_=_ at the end after giving approval from facebook, and when I debug externalcallback function doesnot get hit. What I am missing? I am following microsoft doc. https://docs.microsoft.com/en-us/aspnet/mvc/overview/security/create-an-aspnet-mvc-5-app-with-facebook-and-google-oauth2-and-openid-sign-on