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. Have Fedora25 server, dnf update, dnf clean
2. dnf install owncloud-nginx owncloud-mysql mariadb-server
3. systemctl enable mariadb.service
4. mysql_secure_installation
5. edit /etc/nginx.conf point server root to /usr/share/owncloud
6. systemctl enable php-fpm, systemctl start php-fpm
7. access owncloud, login and see 404 message
Expected behaviour
Owncloud should be functional
Actual behaviour
get 404 message with the URL http://$hostname/index.php/apps/files/ 404 Not Found
Server configuration
Operating system: Fedora 25
Web server: nginx
Database: mariadb
PHP version: 7.0.14-1.fc25
ownCloud version (see ownCloud admin page): owncloud.noarch 9.1.3-1.fc25
Updated from an older ownCloud or fresh install: no
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption): no
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.
404 not found