Hi, we are using Liferay document library, the files can be accessed via WebDAV.
When I try to access the folders with Cyberduck (Version 4.2.1) on Mac, everything works fine. When I try to connect with Cyberduck (Version 4.4.3) on Windows 7, I can't login. It says "Unauthorized. Please contact your web hosting service provider for assistance."
Please report this bug to the server software vendor Liferay to properly support HEAD requests. It looks like 401 is returned even if the request is properly authorized with HTTP Digest user credentials. Reopen this ticket if you have more information from the vendor that the interoperability issue is on our side.