This article has been archived. It is offered "as is" and will no longer be updated.
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.
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.
A supported hotfix is 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 software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
Microsoft Internet Explorer 6.0 Service Pack 1
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.
Date Time Version Size File name -------------------------------------------------------------- 15-Apr-2004 18:59 6.0.2800.1421 589,824 Wininet.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.