Solved

Intermittent User id from AD Domain is empty

Posted on 2013-01-29
8
173 Views
Last Modified: 2013-07-07
Refer to attached screen.

Many of our patient registration kiosks (.Net app running on Win XP)
intermittently get the attached message upon login to the application.

This .Net application authenticate to our customer's AD (think it's AD 2000).

If a user successfully login (& remain login but don't logout), the user won't
face this issue.  To temporarily relieve this issue, we'll exit the IE browser,
relaunch IE & relogin & usually this will allow the user to login without
getting this error (but not necessarily always the user won't run into this
issue, just that it appears to be less of chance of running into it after IE
exit & relaunch).

What should I look for to troubleshoot this?
a) get Event Viewer logs from the affected kiosks / PCs ?
b) any specific logs from the AD ?
c) anything I can install on the kiosks to troubleshoot further?
    (such as httpwatcher?)
d) do you need a sample codes of the .Net when login

I was told by apps team there's no change to the apps
ADautherr.jpg
0
Comment
Question by:sunhux
  • 4
  • 2
8 Comments
 
LVL 1

Assisted Solution

by:mgbm_it
mgbm_it earned 167 total points
ID: 38830571
are those users directly connected to the AD ?
what kind of authentication are you using at your AD ?
0
 

Author Comment

by:sunhux
ID: 38831260
> are those users directly connected to the AD ?
I'm not a Wintel admin but sort of PM so I'm not too sure what's
meant by the above.  I was told there's domain controllers from
2 different domains involved here

>what kind of authentication are you using at your AD ?
It's Windows authentication (not Kerberos, not LDAP, I heard)
0
 
LVL 34

Assisted Solution

by:Paul MacDonald
Paul MacDonald earned 333 total points
ID: 38836269
This only happens on login?  Not after a user is already logged in?  

What if users refresh the browser before trying to log in?
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 

Author Comment

by:sunhux
ID: 38842259
> This only happens on login?  Not after a user is already logged in?  
yes, that's right, immediately after login.  Never after user successfully login.

>What if users refresh the browser before trying to log in?
Haven't tried this.

Now, the suspicion is the DC / AD.  Any logs or troubleshooting
measures we can undertake on the DC / AD ?
0
 
LVL 34

Accepted Solution

by:
Paul MacDonald earned 333 total points
ID: 38842410
Maybe monitor the network, to see if there's a problem with the NIC or switch.
0
 

Author Comment

by:sunhux
ID: 38898094
I ran a continuous ping script from the web server to
the DC, no ping timeout.

Anyone has any VB or .Net script to simulate repeated
login authentication to the DC/AD ?
0
 

Author Closing Comment

by:sunhux
ID: 39305233
Not solved
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, we will see the basic design consideration while designing a Multi-tenant web application in a simple manner. Though, many frameworks are available in the market to develop a multi - tenant application, but do they provide data, cod…
Is your Office 365 signature not working the way you want it to? Are signature updates taking up too much of your time? Let's run through the most common problems that an IT administrator can encounter when dealing with Office 365 email signatures.
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

912 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now