Problem:
Using the native windows implementation of WebDAV as described in the official documentation:
is failing for you with errors like:
Solution:
The user g-a-c has pointed out in the following thread:
https://forum.owncloud.org/viewtopic.php?f=23&t=11246&p=61241#p61202
that the native windows implementation of WebDAV only use an SSLv2 Hello message, and will only negotiate up to TLSv1.0. If you have disabled TLSv1.0 and only using TLSv1.1+ on your server you will get issues like described above.
To workaround this problem pick a better WebDAV implementation like described in the official documentation.