MVC Forms LoginUrl is incorrect

Question

I have an ASP.NET MVC 3 application with forms authentication. For some reason that I cannot see, the login redirect url is /Account/Login?ReturnUrl=%2fSecure%2fAction

Answer 1

Instead of this:

<appSettings>
  <add key="loginUrl" value="~/Authentication/LogOn" />
</appSettings>

You could use this:

<appSettings>
  <add key="PreserveLoginUrl" value="true" />
</appSettings>

It worked for me.

Answer 2

frennky's answer helped me get to this. I needed all of these in my web.config:

<appSettings>
  <add key="loginUrl" value="~/Authentication/LogOn" />
</appSettings>

<system.web>
  <authentication mode="Forms">
    <forms loginUrl="~/Authentication/LogOn" timeout="2880"></forms>
   </authentication>
   <authorization>
     <deny users="?"/>
   </authorization>
</system.web>