Forms Authentication timing out when it shouldn't?

Question

I have a problem with an ASP.NET application that is driving me nuts.

When a user leaves a page inactive for a period of time the session was timing out and error were b

Answer 1

This may also happen when iis recycles or terminates the application pool.

You may want to check Troubleshoot Forms Authentication It could be that the client lost their cookie.

If you manually generate the authentication ticket, you need to set the timeout in code and not the web.config