Question

ASP.net MVC 3 out of the box forms authentication

when certain users on certain browsers try and authenticate they get the following error

Server Error in ‘/MVC’ Application.
——————————————————————————–

The parameters dictionary contains a null entry for parameter ‘rememberMe’ of
non-nullable type ‘System.Boolean’ for method ‘System.Web.Mvc.ActionResult
LogOn(System.String,
System.String, Boolean, System.String)’ in ‘RipsMVC.Controllers.AccountController’. An
optional parameter must be a reference type, a nullable type, or be declared as an
optional parameter.

Parameter name: parameters

the problem is its not all the time but whenever i turn on fiddler2 it automatically works so i have no clue what the root cause is .

Answer 1

I don’t think it related to fiddler, maybe you need to make rememberMe with [DefaultValue(false)] or make it a bool?.

Anyway, you can setup a breakpoint and check the request body (using Request.Forms) to see the difference with/without fiddler.