Using Windows Auth, But Getting Redirected To Forms Auth Login Page?

Feb 21, 2011

We're running IIS7 and have windows authentication enabled. Everything else is disabled. When we go to the page though, we aren't prompted for a windows logon, but are redirected to the default forms authentication login page (Accoun

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as there is so much code a built a demo project


MSVS 2005 2.0
ajax Enabled site
MS SQL server 2005

User/logon On server required name: MyDBLogon, access to project database MyFormsAuth

Download project from here : Select 'Download this media' as the top of page) Also I use the FREE trial demo of this tool :

Project : The Member logs on with email address and password.

admin logon is :, password is 12345

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Re run view project ( we are now testing the forms authentication process as cookie is being read to see if authentictaion is still active).

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In our application, we have a need for a user to "impersonate" a different user. Think of it as a hierarchy -- Bob is above Frank in a hierarchy. Bob is logged in, and he needs to do things in the system for a short time as Frank. So, we have given Bob a list of users that report to him, and an impersonate link. He clicks on this link, and, behind the scenes, I log Bob out, and log in as Frank. I also set a session variable that tells me that really Bob is they guy who is the user. Also, Bob (acting as Frank now) has a nice little link at the top of every page that says "Stop Impersonation."

In addition, when Bob is impersonating Frank, Bob is restricted from doing some things, like changing Frank's password.

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This is a somewhat serious bug for how our system works (bug in our code, I'm sure, not in .Net). We are using ASP.Net c#, aspnet membership services, .net 3.5, forms auth...not sure what else you need to know.

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Just like Utaal mentioned, Membership Services is separate from Session, so it's forms auth token is still hanging around in the browser, but my session variable telling me that that isn't really the user who is controlling the browser isn't there anymore.

EDIT: Sky, here is what I'm doing to authenticate a user. I can't figure out where I would insert a ticket into this flow:

if (Membership.ValidateUser(txtUserName.Text, txtPassword.Text))
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<forms loginUrl="Login.aspx"
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