In order to access your Pimcore installation through WebDav, a few easy steps should be followed to complete the setup:
*E.g.: use dav.yoursite.com subdomain for Dav access and configure your Pimcore vhost to accept all subdomains of yoursite.com by adding the server alias yoursite.com:
<VirtualHost *:443>
ServerName www.yoursite.com
ServerAlias *yoursite.com
(…)
</VirtualHost>
*Note: This has to be a separate (sub)domain for WebDav access from a Windows client! It is also absolutely recommended to use WebDav only through a HTTPS connection!
*E.g.: add dav.yoursite.com as a host name for WebDav
*Note: as of Pimcore 1.4.10 it’s possible to use WebDav for all users not only admins, try connecting to https://dav.yoursite.com with a username and password of an existing user.