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. For information about how to enable this option, see the “More Information” section.

Note: This problem does not occur in Windows XP.