Why is Kerberos not working at all? Why is fallback to NTLM not working when using IE? Reply; Pengzhen Son. Re: Kerberos Cross domain Cross forest - Page cannot be displayed. Oct 07, 2013 05:36 AM Pengzhen Song. The trust was configured with selective authentication, and the users allready had the 'allowed to authenticate. Impersonate Domain User with Integrated Pipeline. // Enable Windows Authentication in ASP.NET *and* IIS, which ensures // User.Identity is a WindowsIdentity WindowsIdentity clientId = (WindowsIdentity)User.Identity; // When 'using' block ends, the thread reverts back to previous Windows identity, // because under the hood. Cross Domain Windows Authentication “Allowed to Authenticate” not working. But still not working. Please let me know how to fix this issue. Thanks, Laxmi Lal Menaria. Browse other questions tagged windows active-directory authentication cross-reference iis-8 or ask your own question. Is it possible to have a wcf service c#.net 4 expose jsonp on IIS and Windows Authentication? I have tried numerous ways but I am unable to achieve this. Cross domain javascript callback is not supported in authenticated services. Can you share code if you have it working? (windows authentication?) Right now, I am not using wcf (as a. I have a basic IIS 10 website joined in Domain A. I can login to the website with credentials from Domain A. We have a trust between Domain A and Domain B. Domain A trusts Domain B: Trust type: External Transitive: No 'Domain-wide authentication' I would like to login to the website with a user from Domain B, but it doesn't seem to work properly. I'm trying to find a way to perform cross domain authentication for a set number of domains. My IIS server is located in Domain A, and I need to support users who are in Domain B, C, D, etc. (about 5 different ones). I'm trying to find a way to allow integrated authentication so the users aren't prompted for a user name / password.

1. Enable Integrated Windows Authentication Iis
2. Iis Windows Authentication Not Working
3. Iis Website Windows Authentication

I've been trying to resolve this question for a couple weeks now via Google and reading SO, and not had much luck, so I thought I'd finally try asking myself.

I'm setting up a very, very simple ASP.NET site on our intranet to generate some information for internal users. I'm using Windows authentication, rather than anonymous access, because based on what user hits the site I will be generating different information.

Long story short, this works perfectly in testing on my local Windows 7 machine where I developed the application. However, from the Windows 2008 R2 server where I want it to reside, when I hit the site I get a pop-up asking for my credentials, and even if I enter them it asks me for them again and again. This happens regardless if I'm hitting the site remotely or locally. If I try using anonymous access I can reach the site both ways but as I cannot identify the user I cannot generate the information I would like to provide.

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1. In IIS, I have Windows Authentication and ASP.NET Impersonationenabled for the site. Everything else is disabled.

2. For the sake of figuring it out, I currently have the web.config set to allow all users and am not denying any.

3. The host/URL I'm using for it is toolName.organization.local
   
4. I was concerned that it was an issue of the 2008 R2 server admin user residing in a different domain then my remote user that I was testing with but again it does not work locally either.
   

5. In the AppHost file, I currently have windowsAuthentication enabled.

Admittedly, I typically use forms authentication on this server for all of our other internal sites so I'm a bit new to windows authentication and this issue. At this point I'm just not sure what to try or check next, so any advice would be helpful. Thanks.

avs099

3 Answers

I know this is a slightly old topic, but I had this exact same problem. Turns out I had the AppPool using Identity: ApplicationPoolIdentity instead of NetworkService. Once I switched that (under Advanced Settings in IIS7.5) I no longer got the server prompting for additional credentials and the pass-through worked perfectly.

Hope that helps!

First, you should realize that Windows passthrough authentication only works with Internet Explorer, and then only if the site is in the trusted sites, or intranet sites security group. Firefox, Chrome, etc. will always prompt for credentials.

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Having said that, you have a couple of issues.

You should have an <authentication mode='Windows' /> element in your web.config

Enable Integrated Windows Authentication Iis

You should decide if you want the app to run in the context of the user, in which case you would also need an <identity impersonate='true'/> tag. If not it should be false (although this is the default).

You do not need to have any authorization rules in your web.config if the site itself is completely guarded by windows authentication.

Pradeep KumarErik FunkenbuschErik Funkenbusch

Just in case it's helpful, the problem for me was that I had left my application pool in Classic mode, in order to try to use NTFS permissions. I never got that to work, but once I switched it back to Integrated mode, I could use <allow> and <deny> tags to configure specific users' access.

Dave CousineauDave Cousineau

Not the answer you're looking for? Browse other questions tagged asp.netwindows-authentication or ask your own question.

Hi I have the following scenario:I have Web Application hosted on IIS and I am in domain a.b.com. The IIS is configured to authenticate the users with windows authentication and everyone that in the domain a.b.com can enter the site.But there are users that in another domain lets call it c.d.com and they can't enter the site with their windows credentials because the IIS check against a.b.com..

How can I configure IIS to check for windows user in c.d.com?Thanks!

ilay zeidmanilay zeidman

2 Answers

Try below process.

1. Go to (IIS) Manager.
2. Right Click on Web-Application.
3. Select Edit Permission option.
4. Select Security tab.
5. Click on Edit.. button.
6. Click on Add.. button.
7. Write your new user domain name
8. Click OK
9. select newly added User name from Group or user names:
10. tick on Allow
11. Click OK

-It should work

prog1011prog1011

You need to set the identity of the application pool of that website:

1. Open IIS
2. Under 'Application Pools' right click on your website's pool, choose 'Advanced Settings..'
3. Edit 'Identity' field
4. set 'Custom account' credentials
5. Recycle just in case

You application is now using the user you've configured.

Iis Windows Authentication Not Working

Iis Website Windows Authentication

Not the answer you're looking for? Browse other questions tagged asp.netiisintranet or ask your own question.