Enter your credentials when Vista accesses SharePoint

[chicagotech]

Vista uses the Web Client service when you Explorer access a WebDAV resource. The Web Client Service uses Windows HTTP Services (WinHTTP) to perform the network I/O to the remote host. WinHTTP sends user credentials only in response to requests that occur on a local intranet site. However, WinHTTP does not check the security zone settings in Internet Explorer to determine whether a Web site is in a zone that lets credentials be sent automatically.

If no proxy is configured, WinHTTP sends credentials only to local intranet sites.

Note If the URL contains no period in the server’s name, such as in the following example, the server is assumed to be on a local intranet site:
http://sharepoint/davshare


If the URL contains periods, the server is assumed to be on the Internet. The periods indicate that you use an FQDN address. Therefore, no credentials are automatically sent to this server unless a proxy is configured and unless this server is indicated for proxy bypass.

Note A server can be indicated for proxy bypass either through the bypass list or through the proxy configuration script.

In this case, you are prompted to enter your credentials when the Web site asks for credentials. Even in this case, the security zone settings are ignored.

Resolution: Downlaod the Hotfix from Microsoft.
o 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

[chicagotech]

The hotfix article # is

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
http://support.microsoft.com/default.as ... -US;941853