Question says it all: there must be one that stands a head-and-shoulders above the rest…which is it? I've got a few bits of software that would like to store syncable data on a WebDav server…
What’s the best free WebDav service out there
webdav
Related Solutions
What operating system are you using? Windows Server 2003 has IIS6, 2008 has IIS7 and 2008 R2 has 7.5.
If you have IIS7 then FTPS (FTP over SSL) is available which is a good secure option. It's a matter of preference if you go with WebDAV or FTPS.
Sounds like you've got Windows clients trying to use WebDAV instead of SMB.
lifting the following from one of my answers a couple months ago:
In Network Connections, Advanced menu -> Advanced Settings, make sure the "Web Client" provider is below the normal options in the provider order.
Or just disable the Web Client service.
Best Answer
Box.net comes highly recommended. Webdav access is available through https://www.box.net/dav - but only for paying customers.
Their free Lite account will give you 1 GB of storage, though individual files cannot be larger than 25 MB each.