Actual behaviour
Your web server is not yet set up properly to allow file synchronization because the WebDAV interface seems to be broken.
Some files have not passed the integrity check. Further information on how to resolve this issue can be found in our documentation. (List of invalid files… / Rescan…)
[root@server35 cloud]# httpd -M | grep -i dav
dav_module (shared)
dav_fs_module (shared)
Syntax OK
You have new mail in /var/spool/mail/root
[root@server35 cloud]# /usr/local/apache/bin/httpd -M | grep -i dav
Syntax OK
dav_module (static)
dav_fs_module (static)
dav_lock_module (static)
Server configuration
Operating system: CentOS
Web server: Linux
Database: MySQL
PHP version: 5.6.24
ownCloud version: 9.1.1 (stable)