Microsoft Windows
Microsoft introduced WebDAV client support in Microsoft Windows 98 with a feature called "Web folders". This client consisted of an OLE object which could be accessed by any OLE software, and was installed as an extension to Windows Explorer (the desktop/file manager) and was later included in Windows 2000. In Windows XP, Microsoft added the "WebDAV mini-redirector" which is preferred by default over the old Web folders client.
This newer client works as a system service at the network-redirector level (immediately above the file-system), allowing WebDAV shares to be assigned to a drive letter and used by any software. The redirector also allows WebDAV shares to be addressed via UNC paths (e.g.
http://host/path/ is converted to \\host\path\) for compatibility with Windows filesystem APIs. However, some versions of the redirector are known to have some limitations in authentication support.[10] This includes the fact that recent versions disable basic authentication for HTTP connections for security purposes. Some suggested workarounds for problems in some versions include: [citation needed]
* explicitly specify a port number in the URL e.g.
http://host:80/path/
* use a fully qualified domain name: NET USE Z:
http://drive.example.org/drive
* specify the user in the URL
http://user@host.tld/path/. This reportedly forces the use of the old "Web folders" client.[11]
In addition, WebDAV over HTTPS works only if a computer has KB892211-version files or newer installed. Otherwise Windows displays "The folder you entered does not appear to be valid. Please choose another" when adding a network resource. NOTE: 892211 has been superseded by KB907306.
Windows Vista includes only the WebDAV redirector, but if you install a version of Office, Internet Explorer, OLE-DB or "Microsoft Update for Web Folders" you will get the original "Web folders" client. The update will only work on the 32bit version of XP/Vista.[12]
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