An updated version of PFDAVAdmin tool contains various bug fixes, has some changes that make it work better against Exchange 2007. “For instance, old versions of PFDAVAdmin expected certain directory objects to be present for all Exchange servers. In Exchange 2007, some of those objects are only present with CAS role. This resulted in a situation where PFDAVAdmin would only connect to Exchange 2007 mailbox servers that also had CAS role. Dependency on .NET Framework 1.1 remains, which means you should run PFDAVAdmin from a workstation with Framework 1.1 installed - you should not install this old version of the framework on your Exchange servers, because it makes IIS unhappy. PFDAVAdmin still cannot connect to Exchange 2010 servers, because WebDAV is gone from 2010. If you need similar functionality for Exchange 2010, use ExFolders instead,” Microsoft.
Download: PFDAVAdmin tool