Permanent Authentication Token Expires

Question

I have an ASP.NET MVC application using forms authentication. Here's the line of code where I create the auth token:

FormsAuthentication.SetAuthCookie(username, true);

My web.config file contains:

<system.web>
  <machineKey validationKey="{unique key}" decryptionKey="{unique key}" validation="SHA1" decryption="AES" />
  <authentication mode="Forms">
    <forms loginUrl="~/account/" timeout="2880" />
  </authentication>
  ...
</system.web>
<location path="my">
  <system.web>
    <authorization>
      <deny users="?" />
    </authorization>
  </system.web>
</location>

Although the persistent cookie parameter is set to true, my users log out after a few days of inactivity.

The application is deployed to AppHarbor, but I experienced the same behavior when it was hosted on a dedicated server.

What am I missing that will cause users to log out periodically?

Answer 1

Is the timeout set to 2880 minutes, which is 48 hours?

timeout . - 30 . cookie , - cookie.

http://msdn.microsoft.com/en-us/library/ff647070.aspx