WebDav upload functions fails in my environment.
Mostly caused by mod_ruid2.
Go to the admin panel.(OR contact your hosting provider.) Open the custom httpd config for that domain and paste this:
<Directory |DOCROOT|> <Limit GET POST OPTIONS PROPFIND PUT DELETE MKCOL MOVE> Order allow,deny Allow from all </Limit> <LimitExcept GET POST OPTIONS PROPFIND PUT DELETE MKCOL MOVE> Order deny,allow Deny from all </LimitExcept> </Directory>
PUT is to send files
DELETE is to delete elements
MKCOL is to create folders
MOVE is to move elements
Then I fixed the issue.