Question

Request.ServerVariables(LOGON_USER") is empty

Asked by: Jim_Rizzo_NWCCAC

I have an ever-evolving intranet app on an IIS Server that used Request.ServerVariables(LOGON_USER") to grab the user name of the user and store it with the entries they make.

Recently the app required that I do lookups on a SQL08 DB that required i used a specific domain account.

no probs...
I changed Identity to run the application pool to run with the domain account instead of the default Network Service. NICE i'm doing lookups on the DB and everything is fine... or is it?

I can't seem to capture the user who is running the app with Request.ServerVariables(LOGON_USER")  like i was previous to this change. Of course switching to the old application pool will provide fix the username problem but doesn't help much with my lookups.

The site does not allow anonymous access and uses Integrated Windows Authentication.

i hope that's enough detail.

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2009-09-29 at 11:50:54ID24771178
Tags

IIS

,

ApplicationPool Request.ServerVariables("LOGON_USER")

,

ASP.net08

Topics

Microsoft IIS Web Server

,

Programming for ASP.NET

Participating Experts
2
Points
125
Comments
18

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. Identication on intranet
    I am currently developping an intranet apllication using IIS on the server. The server is on our WinNT domain. The same server is also serving as Web Proxy for our employees. Is there a means to retrieve the domain user name of the person which is connected on the intranet s...
  2. Anonymous user mystery
    I'm working on an ASP application that uses one VB component that continues to crash at certain times of the day. After checking the monitor log for current sessions and anonymous logons for that period of time, I discovered a huge number of anonymous logons. There shouldn't ...
  3. Request.ServerVariables("Logon_User") with IIS set…
    I can't get any readout from Request.ServerVariables("Logon_User") when I have set IIS to anonymous. The network is a ActiveDirectory based network, and all users logon through AD, but when the page I am building is used, I can't see who has visited it. Is there som...
  4. Why Request.ServerVariables("LOGON_NAME") is …
    Hi, I authenticated our web page through NTLM but when I try to retrieve Request.ServerVariables("LOGON_NAME") it is empty, IIS is confugured correctly and anonymous login is disabled. Did I miss something? Why Request.ServerVariables("LOGON_NAME") is empt...
  5. IIS DNS error when anonymous unchecked on intranet??
    Hello Experts, I am a developer working on intranet applications. Recently an application was installed on our development IIS server and it appears that this application may have made some modifications to the settings on our main website in IIS. This site is to use anonymo...
  6. How to capture Logon_User value with Anonymous set on
    I have a need to capture the employee ID for an application that will be accessible to all of our employees via the company intranet. I used the Request.ServerVariables("Logon_User") as well as ("Auth_User") in an attempt to capture this value - but all I...

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: meverestPosted on 2009-09-30 at 07:23:07ID: 25459136

Hi,

if Request.ServerVariables("LOGON_USER") is empty, then IIS is accessing the filesystem with the anonymous IUSR user.  IIS will only require authentication when the anonymous user does not have rights to access the server content, or when 'allow anonymous' is UNchecked.

try disabling windows integrated auth to see if you can make the login dialog come up.

Cheers.

 

by: Jim_Rizzo_NWCCACPosted on 2009-09-30 at 08:00:15ID: 25459626

When anonymous is checked and windows authentication isn't i'm getting nothing.
When ananymous is unchecked and windows authentication isn't I'm getting nothing.

When I move the application to the default application Pool windows authentication is working fine. It's when I move the app to an application pool that is run with an AD user that i'm running into the issues.

 

by: Jim_Rizzo_NWCCACPosted on 2009-09-30 at 08:38:32ID: 25460017

that shouldn't have read
"When I move the application to the default application Pool windows authentication is working fine"
What I meant to say was it was picking up the users logon name.

 

by: Jim_Rizzo_NWCCACPosted on 2009-09-30 at 08:42:18ID: 25460062

In a nut shell the Website in IIS is using Integrated Windows Authentication.

The problem occurs when changing the application pool's Identity from being predefined->network service to Configurable-> domain account.

 

by: meverestPosted on 2009-09-30 at 16:35:19ID: 25464711

Hi,

make sure that the anonymous users do not have rights to access the web site content.  This will force IIS to authenticate the user, and then those fields will be populated.

Cheers,  Mike.

 

by: Jim_Rizzo_NWCCACPosted on 2009-09-30 at 18:42:52ID: 25465418

anonymous users is unchecked.

 

by: meverestPosted on 2009-10-01 at 06:18:17ID: 25468289

if you disable windows integrated and allow only plain text (basic) auth, does the login dialog show up?

Cheers.

 

by: Jim_Rizzo_NWCCACPosted on 2009-10-01 at 06:46:19ID: 25468545

Same Result.

 

by: meverestPosted on 2009-10-01 at 06:51:21ID: 25468590

Hi,

yes, but....

DOES THE LOGIN DIALOG SHOW UP?

Cheers.

 

by: Jim_Rizzo_NWCCACPosted on 2009-10-01 at 06:54:35ID: 25468616

Yes the dialog asking for user/pass comes up. Unfortunately my admin and regular user/pass does not grant me access to the site.

HTTP Error 401.2 - Unauthorized: Access is denied due to server configuration.
Internet Information Services (IIS)

 

by: meverestPosted on 2009-10-01 at 07:02:48ID: 25468716

OK, so you are closing on the issue - the underlying issue is that users are NOT authenticating to the web server.  That is why the remote_user values are blank.

Solve the authentication issue, then you will have the related problem solved.

Cheers.

 

by: Jim_Rizzo_NWCCACPosted on 2009-10-01 at 07:06:36ID: 25468752

I don't really care if they authenticate to the server or not tbh I just want their username to track who's submitting entries into the site. Everything is fine as long as I don't have the application pool run under a different domain account.

 

by: meverestPosted on 2009-10-01 at 16:07:09ID: 25474021

>> I don't really care if they authenticate to the server or not tbh I just want their username to track who's submitting entries into the site.

yes, I understand that, but the users MUST authenticate to the site else the application doesn't know who they are - thus IIS can't display who it is in server variables.

Cheers.

 

by: meverestPosted on 2009-10-01 at 16:10:23ID: 25474035

The change of application name is your clue - when you change the application identity, then authentication stops.  That is where your investigation needs to go.  I can't think of any reason that might be so, therefore the best help I can give you is to identify the root cause of the problem.

If this were happening to me, I would look over the security access rights on all the relevant content folders and see what access the interactive users have to that content.  Somehow, IIS is getting access to the folders without authenticating the user - so it is allowing the IUSR access.

Cheers.

 

by: tedbillyPosted on 2009-10-05 at 22:30:34ID: 25502072

The only way to populate that variable is with 'Anonymous' access off and another authentication selected such as Basic or Windows.  This has nothing to do with the worker process that interacts with the operating system.  This is strictly related to the authentication challenge response in the headers when a page is requested.

When authentication is configured and the browser requests a page the web server sends an authentication required header to the client browser with the type of authentication required.  The browser then sends the authentication response which in Windows or Basic authentication includes the users logon.

 

by: Jim_Rizzo_NWCCACPosted on 2009-10-06 at 08:08:23ID: 25505892

These two comments best explained the behaviour.

I ended up creating a local copy of the tables and used windows authentication as a work around.

 

by: meverestPosted on 2009-10-06 at 14:09:42ID: 25509991

Umm, I said pretty much exactly the same thing several times already...! <g>

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...