Microsoft KB Archive/883944

= Web requests may not obtain the correct security context on a server that is running Windows Server 2003 =

Article ID: 883944

Article Last Modified on 7/24/2007

-

APPLIES TO


 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise x64 Edition

-





SYMPTOMS
If you have two Web sites that use Windows authentication, and these Web sites are running on different ports, Web requests from one Web site to the other Web site may not obtain the correct security context. Some server variables such as REMOTE_USER may have the value of NULL. This condition causes any code that requests the REMOTE_USER server variable to return a null value instead of the authenticated user.



CAUSE
This problem occurs because of a code defect in the QueryContextAttributes function. When a call that uses the SECPKG_ATTR_NAMES attribute is made to the QueryContextAttributes function to request a user name, the QueryContextAttributes function may return an empty user name instead.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

Restart requirement
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Microsoft Windows Server 2003, 32-bit editions
Date        Time   Version            Size    File name -- 26-Aug-2004 19:54  6.0.3790.193        9,728  W3comlog.dll 26-Aug-2004 19:54  6.0.3790.206      342,528  W3core.dll

Microsoft Windows Server 2003, 64-Bit Enterprise Edition
Date        Time   Version            Size    File name      Platform -- 26-Aug-2004 19:54  6.0.3790.193       21,504  W3comlog.dll     IA-64 26-Aug-2004 19:54  6.0.3790.206      951,296  W3core.dll       IA-64



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbqfe kbhotfixserver kbbug kbfix kbwinserv2003presp1fix KB883944

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.