C# – Windows authentication keeps asking username password even credentials are correct

asp.netcwindows-authentication

I have developed an application to allow windows authentication and hosted it to the live server. in my local pc i am able to get the username password. but when i am accessing from web (e.g. websso.mydomain.com) it keeps asking credentials even after i entered correct credentials.

<authentication mode="Windows">
</authentication>

<authorization>
  <deny users="?" />
</authorization>
<identity impersonate="true"/>

i have added above tags in web.config, hosting server is windows server 2008 R2. I have tried to get username from

WindowsIdentity.GetCurrent().Name
Environment.Username
Request.ServerVariables["LOGON_USER"]
Request.ServerVariables["AUTH_USER"]
HttpContext.Current.Request.LogonUserIdentity.Name

Is there any changes which needs to do in IIS or any steps to follow to configure windows authentication.

Installed IIS version is 7.5

Best Answer

I had a similar issue recently, try ensuring that the windows user has read access to the directory on the server.

Related Solutions

ASP.NET Windows Authentication Impersonate Problem

Impersonation is on a site wide basis, or you can manually turn it on. What you can't do is manually turn it off I'm afraid, nor can it be done via the connection strings.

So basically turn impersonation off, then wrap the database calls when impersonation is needed like so:

using System.Security.Principal;

WindowsIdentity winId = (WindowsIdentity)HttpContext.Current.User.Identity;
WindowsImpersonationContext ctx = null;
try
{
    ctx = winId.Impersonate();
    // Do your thing
}
catch
{
}
finally
{
    if (ctx != null)
        ctx.Undo();
}

The MSDN P&P guide to asp.net impersonation has more.

Receiving login prompt using integrated windows authentication

I have a Windows 2008 server that I'm working on, so my answer is not completely the same as what the OP has on a Windows 2003 server.

Here is what I did (recording this here so I can find it later).

I was having this same issue:

In my Web.config file, I had this section:

<system.web>
    <authentication mode="Windows" />
    <authorization>
        <allow users="*" />
        <deny users="?" />
    </authorization>
</system.web>

Under IIS, all of these seems to be solved under the Authentication icon.