Microsoft KB Archive/829643

= Internet Explorer 6.0 Service Pack 1 cannot use the Automatic Detect Settings feature in a Windows XP-based computer to find a WPAD server =

Article ID: 829643

Article Last Modified on 11/15/2007

-

APPLIES TO

 Microsoft Internet Explorer 6.0 Service Pack 1, when used with:  Microsoft Windows XP Professional

 Microsoft Windows XP Home Edition 

-





SYMPTOMS
When a Microsoft Windows XP-based computer that is running Microsoft Internet Explorer 6.0 Service Pack 1 uses the Automatic Detect Settings feature to find an automatic proxy configuration script, the Web Proxy Auto-Discovery (WPAD) protocol server cannot be found.



CAUSE
This problem may occur if all the following conditions are true:
 * The Windows XP-based computer has more than one network connection configured in Network Connections.
 * The Windows XP-based computer uses connection-specific Domain Name System (DNS) suffixes for each network connection.
 * The Windows XP-based computer uses Dynamic Host Configuration Protocol (DHCP) to obtain IP addresses.
 * The Windows XP-based computer has a primary DNS suffix configured in the Properties settings of My Computer.
 * The DNS domain name of the WPAD server is different from the primary DNS domain name of the Windows XP-based computer.

This problem will occur if all the conditions are true because the WPAD auto-discovery mechanism will only use the primary DNS suffix to try to find a WPAD server and the Wpad.dat file. The WPAD auto-discovery mechanism will not use the connection-specific DNS suffix to try to find the WPAD server.



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
Microsoft Internet Explorer 6.0 Service Pack 1

File information
The English version of this hotfix has the file attributes (or later) 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.

<pre class="fixed_text">  Date         Time   Version             Size   File name --  15-Apr-2004  18:59  6.0.2800.1421     589,824  Wininet.dll

<div class="status_section">

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

<div class="moreinformation_section">

MORE INFORMATION
For more information about the WPAD protocol, visit the &quot;WinHTTP AutoProxy Support&quot; Web page on the MSDN Web site: http://msdn2.microsoft.com/en-us/library/aa384240.aspx

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: kbhotfixserver kbqfe kbwinxpsp2fix kbwinxppresp2fix kbfix kbbug KB829643

-

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

© Microsoft Corporation. All rights reserved.