ASP.NET MVC 5 Identity 2 PasswordSignInAsync method always returns false -

i'm writing come code external app. i'm trying use microsoft identity 2.0 , asp.net mvc 5. i've customized userviewmodel hold firstname , lastname , couple of other parameters. whenever register user logs in when try normal login email/password. signinmanager.passwordsignasync returns false. since code checks internal framework i'm trying figure out how debug situation. provide code here who's willing @ it. in advance!

that generic login function provided microsoft in examples. i've not changed there. function has error message.

public async task<actionresult> login(loginviewmodel model, string returnurl)     {         if (!modelstate.isvalid)         {             return view(model);         }          // doesn't count login failures towards account lockout         // enable password failures trigger account lockout, change shouldlockout: true         var result = await signinmanager.passwordsigninasync(model.email, model.password, model.rememberme, shouldlockout: false);         switch (result)         {             case signinstatus.success:                 return redirecttolocal(returnurl);             case signinstatus.lockedout:                 return view("lockout");             case signinstatus.requiresverification:                 return redirecttoaction("sendcode", new { returnurl = returnurl, rememberme = model.rememberme });             case signinstatus.failure:             default:                 modelstate.addmodelerror("", "invalid login attempt.");                 return view(model);         }     } 

this login function

public async task<actionresult> login(loginviewmodel model, string returnurl)     {         if (!modelstate.isvalid)         {             return view(model);         }          // doesn't count login failures towards account lockout         // enable password failures trigger account lockout, change shouldlockout: true         var result = await signinmanager.passwordsigninasync(model.email, model.password, model.rememberme, shouldlockout: false);         switch (result)         {             case signinstatus.success:                 return redirecttolocal(returnurl);             case signinstatus.lockedout:                 return view("lockout");             case signinstatus.requiresverification:                 return redirecttoaction("sendcode", new { returnurl = returnurl, rememberme = model.rememberme });             case signinstatus.failure:             default:                 modelstate.addmodelerror("", "invalid login attempt.");                 return view(model);         }     } 

this customized identity model

    public class applicationuser : identityuser {     [displayname("prefix")]     public string prefix { get; set; }      [displayname("first name")]     public string firstname { get; set; }      [displayname("last name")]     public string lastname { get; set; }      [displayname("suffix")]     public string suffix { get; set; }      public async task<claimsidentity> generateuseridentityasync(usermanager<applicationuser> manager)     {         // note authenticationtype must match 1 defined in cookieauthenticationoptions.authenticationtype         var useridentity = await manager.createidentityasync(this, defaultauthenticationtypes.applicationcookie);         // add custom user claims here         return useridentity;     } }  public class applicationdbcontext : identitydbcontext<applicationuser> {     public applicationdbcontext()         : base("defaultconnection", throwifv1schema: false)     {     }      public static applicationdbcontext create()     {         return new applicationdbcontext();     }      public system.data.entity.dbset<jbiplacementtracking.models.placementviewmodel> placementviewmodels { get; set; }      public system.data.entity.dbset<jbiplacementtracking.models.placement> placements { get; set; }      public system.data.entity.dbset<jbiplacementtracking.models.packetstatus> packetstatus { get; set; } } 

i'm wondering if problem might don't have custom loginviewmodel.

i'm in on head right , if has resources i'd appreciate link it.

thanks in advance again!

you using email username @ login function. make sure upon registration, email inserted both username , email fields. use use trim() , tolower() before inserting , after reading, that's rest mind stored in db, , might not necessary. luck.