Please help us by providing the following info. Before posting please also check the pinned "Known issues" threads and make sure that you're running the latest available version for your oC release: https://owncloud.org/changelog/
Steps to reproduce
1.open a file with libreoffice trought the webdav mapped folder under libreoffice, using user 1
2.open the same file to the same way using user 2
3.see that user 2 can open the file without any notification or restriction for editing and save
Expected behaviour
Tell us what should happen
User 2 can't open or can't edit the file, while the user1 was working on it
Actual behaviour
Tell us what happens instead
1.open a file with libreoffice trought the webdav mapped folder under libreoffice, using user 1
2.open the same file to the same way using user 2
3.see that user 2 can open the file without any notification or restriction for editing and save
Server configuration
Operating system: centos 6
Web server: apache2
Database:mariadb
PHP version: 5.4.40
ownCloud version (see ownCloud admin page):9.1.4
Updated from an older ownCloud or fresh install:fresh install
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption):no
ownCloud configuration
Go to the admin page, click on 'admin' -> 'Generate Config Report' -> 'Download ownCloud config report' or use the command line `sudo -u www-data php occ config:list system` (please sanitize sensitive data):
ownCloud log (data/owncloud.log)
Please paste possible errors in the following code block, see https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808 for more info
Integrity status for oC9+
Login as admin user into your ownCloud and access
http://example.com/index.php/settings/integrity/failed
paste the results here.