You are prompted to type your user credentials when you use Internet Explorer to access files on a Web Distributed Authoring and Versioning (WebDav) site on a Windows Vista-based computer

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Article ID: 941853 - View products that this article applies to.
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SYMPTOMS

When you use Windows Internet Explorer to access files on a Web Distributed Authoring and Versioning (WebDav) site on a Windows Vista-based computer, you receive a dialog box that prompts you to type your user credentials.

Note A SharePoint Portal Server site is an example of a WebDav site.

This problem occurs if you disable the Automatically detect settings option in Internet Explorer and instead use an automatic configuration script to configure proxy settings. For information about how to enable the Automatically detect settings setting, see the "More Information" section.

This problem does not occur in Windows XP.

CAUSE

When you use Internet Explorer to access the WebDAV site, Internet Explorer uses Windows HTTP Services (WinHTTP). WinHTTP sends user credentials only in response to requests that occur on a local intranet site during an authenticated logon process. However, WinHTTP does not check the security zone settings in Internet Explorer to determine whether a Web site is a local intranet site. Instead, WinHTTP depends on the proxy settings in Internet Explorer to determine whether a Web site is a local intranet site. If the Automatically detect settings option is not enabled, any autoconfiguration script that is defined will not be processed. WinHTTP will not identify the WebDAV site as a local intranet site. Therefore, WinHTTP will send out a request without user credentials, and you will be prompted to type user credentials.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack

Hotfix information

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

Prerequisites

No prerequisites are required.

Restart requirement

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

Registry information

To use this hotfix, you do not have to make any changes to the registry.

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 item in Control Panel.
Windows Vista, 32-bit versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Update.mumNot applicable1,78401-Sep-200714:15Not applicable
X86_e209eb9c50065114506b75a90cc3617e_31bf3856ad364e35_6.0.6000.20673_none_9d3219b632d67ca5.manifestNot applicable70901-Sep-200714:15Not applicable
X86_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6000.20673_none_53807765cfdec4cf.manifestNot applicable7,33901-Sep-200714:15Not applicable
Webclnt.dll6.0.6000.20673194,56001-Sep-200702:15x86
Windows Vista, 64-bit versions
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Amd64_c5567ec1450ac7f5b02dd3a6e7b00a38_31bf3856ad364e35_6.0.6000.20673_none_9e331cecb38bace3.manifestNot applicable1,06601-Sep-200714:15Not applicable
Amd64_microsoft-windows-webdavredir-webclient_31bf3856ad364e35_6.0.6000.20673_none_af9f12e9883c3605.manifestNot applicable7,36901-Sep-200714:20Not applicable
Update.mumNot applicable2,02101-Sep-200714:15Not applicable
Webclnt.dll6.0.6000.20673211,45601-Sep-200703:16x64

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.

MORE INFORMATION

To enable the Automatically detect settings setting, follow these steps:
  1. Click Start
    Collapse this imageExpand this image
    the Start button
    , type Inetcpl.cpl in the Start Search box, and then press ENTER.
  2. Click the Connections tab, and then click LAN Settings.
  3. Click to select the Automatically detect settings check box, and then click OK two times.
For more information about authentication in WinHTTP, visit the following Microsoft Web site:
http://msdn2.microsoft.com/en-us/library/aa383144.aspx
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
936611 Internet Explorer 7 incorrectly recognizes an intranet Web site as an Internet Web site
For more 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

Properties

Article ID: 941853 - Last Review: October 8, 2011 - Revision: 5.0
APPLIES TO
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Business
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise
  • Windows Vista Home Premium
  • Windows Vista Ultimate
Keywords: 
kbautohotfix kbvistasp1fix kbexpertisebeginner kbexpertiseadvanced kbqfe kbhotfixserver KB941853

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