Using WebDAV Server with Digest Authentication
With Windows Vista Client
Web Folders on Windows Vista may attach a machine or domain name to the username returned in Digest Authorization header. Unlike Basic authentication it returns domain and user name separated with 2 ‘\’ symbols: DOMAIN\\User. Note that in digest algorithm Windows Vista uses domain and user name separated with only one ‘\’ symbol: DOMAIN\User. DeltaV sample shipped with the engine provides Digest authentication class that works with any Windows version including Vista.
With Windows XP and Windows 2003 Client
Web Folders components shipped with Windows 2003 and Windows XP does not attach Authorization header to OPTIONS requests. To allow Digest authentication OPTIONS requests must be left unauthenticated.