apache2.4 with webdav give an 405 error

There seems to be a bunch of people who have come accross this issue after the last update.

I found my answer here: on the Dav on directories, disable the Directory index features with the following directive:

DirectoryIndex disabled

Of note: one of the websites I manage was defaced on January 7th through an "Hmei7" php attack on old copies of wordpress I had placed in an accessible place and forgotten about. Don't leave old php-based apps lurking around at visible places!