Please help us by providing the following info. Before posting please make sure that you're running the latest available version for your oC release: https://owncloud.org/changelog/ + https://owncloud.org/changelog/desktop/
Steps to reproduce
1. Install OwnCloud client Windows
2. Attempt to sync > 300,000 - 900,000 files
Tell us what should happen
The file sync should complete normally albeit completion time dependant on number of files as well as total data size downloaded/uploaded
Tell us what happens instead
For filecounts > approximately 400,000, the sync client crashes with messages from Visual C++.
The similar version of ownCloud sync client for 64-bit Ubuntu appears to work fine for > 1 million files (about 50TB data)
However, the similar version of the ownCloud sync client for 32-bit Ubuntu has similar problems as the Windows client.
I suspect that the 32-bit clients will crash for > ~ 300,000 files
Client version: 184.108.40.20608
Client operating system: Windows 7
Operating system: Ubuntu 14.04
Web server: Apache 2.4.7
Database: Mysql 5.5.52-0ubuntu0.14.04.1 (Ubuntu)
PHP version: PHP 5.5.9-1ubuntu4.20 (cli) (built: Oct 3 2016 13:00:37)
ownCloud version (see ownCloud admin page): ownCloud 9.1.1 (stable)
Updated from an older ownCloud or fresh install: updated from 9.1.0
ownCloud log (data/owncloud.log):
Special configurations (external storage, external authentication, reverse proxy, server-side-encryption):
Ubuntu server using ZFS for storage of ownCloud data.