This has nothing to do with Tridion as you are using Windows Explorer to access WebDAV, so if anything it's the Explorer who is to blame for sending wrong requests, but if you will take a look at WebDAV sprcification here: http://www.webdav.org/specs/rfc4918.html, you can see all the possible calls under chapter 9.
Tridion Folders are treated as collections, so there's a MKCOL
call to create a folder, but if you will check 9.7.2 PUT for Collections
, you will see:
9.7.2 PUT for Collections
This specification does not define the behavior of the PUT method for existing collections. A PUT > request to an existing collection MAY be treated as an error (405 Method Not Allowed).
The MKCOL method is defined to create collections.
So there's no way to update existing folders, it's create
and upload contents
, indeed.
You can also check this article if you are interested in WebDAV protocol: http://amarchuk.blogspot.nl/2011/10/heres-c-webdav-client-that-works-with.html