ASP.NET Identity + Facebook login: Pass in “rerequest?”
问题 (Using ASP.NET Identity 2.1, Microsoft.Owin.Security.Facebook 3.0.1 in a Web API project) From here: https://developers.facebook.com/docs/facebook-login/login-flow-for-web/v2.2 This is because once someone has declined a permission, the Login Dialog will not re-ask them for it unless you explicitly tell the dialog you're re-asking for a declined permission. You do this by adding the auth_type: rerequest flag to your FB.login() call: FB.login( function(response) { console.log(response); }, {