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Consider the following scenario:
You are running a Windows Vista-based computer.
You use Windows Internet Explorer to access files on a Web Distributed Authoring and Versioning (WebDAV) site that resides on a local intranet site.
Note A Microsoft SharePoint Portal Server site is an example of a WebDAV site.
In this scenario, you receive a dialog box that prompts you to enter your user credentials.
This problem occurs if the following conditions are true:
You do not configure any proxy-server settings in Internet Explorer.
You access the WebDAV site on the local intranet site by using a single label host name, such as http://sites/ or http://mysps/.
This problem does not occur on a Windows XP-based computer that has Internet Explorer 6 or Internet Explorer 7 installed.
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
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.
No prerequisites are required.
You must restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other previously released hotfixes.
To use this hotfix, you do not have to make any changes to the registry.
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.
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.
This problem resembles the problem that is described in the following Microsoft Knowledge Base article:
941853 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
The 941853 hotfix resolves an issue in which you are prompted to enter your user credentials when Internet Explorer is configured to use an auto-configuration URL to obtain proxy-server settings to access WebDAV content on a local intranet 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