Files are disappearing from server out of the blue

Steps to reproduce

1.Mostly document files (xls, doc, ods…) simply disappear from the server repository. For owncloud it shows the files exist. But, uppon clicking over the file on the web, a not found message popup. Checking inside the server, the file does not exist.
2.After doing a files:scan, owncloud realizes the missing files and the desktop client synchronizes and deletes the local files.
3.At first we thought that it could be a antivirus bug. But we removed the antivirus app and it kept happining.

One important thing: we are trying the virtual file feature … Maybe it is breaking the system…

Expected behaviour

Files should not disappear

Actual behaviour

Files are disappering

Server configuration

Operating system: Debian 9.4

Web server: Apache/2.4.25 (Debian)

Database: Ver 10.1.26-MariaDB-0+deb9u1

PHP version: php7.0

ownCloud version: (see ownCloud admin page)

Updated from an older ownCloud or fresh install: updated from version 9

Where did you install ownCloud from: Owncloud site

Signing status (ownCloud 9.0 and above):

“system”: {
“instanceid”: “ockex6yv9ndr”,
“passwordsalt”: “REMOVED SENSITIVE VALUE”,
“trusted_domains”: [
“datadirectory”: “/var/www/html/”,
“overwrite.cli.url”: “”,
“dbtype”: “mysql”,
“version”: “”,
“dbname”: “webcenter”,
“dbhost”: “localhost”,
“dbtableprefix”: “oc_”,
“logtimezone”: “America/Sao_Paulo”,
“installed”: true,
“default_language”: “pt_BR”,
“defaultapp”: “files”,
“preview_libreoffice_path”: “/usr/bin/libreoffice”,
“collabora”: “”,
“preview_office_cl_parameters”: " --headless --nologo --nofirststartwizard --invisible --norestore -convert-to pdf -outdir ",
“knowledgebaseenabled”: false,
“enable_avatars”: true,
“allow_user_to_change_display_name”: true,
“user_backends”: [
“class”: “OC_User_IMAP”,
“arguments”: [
“memcache.local”: “\OC\Memcache\Redis”,
“filelocking.enabled”: “true”,
“memcache.locking”: “\OC\Memcache\Redis”,
“redis”: {
“host”: “localhost”,
“port”: 6379,
“timeout”: 0,
“updatechecker”: false,
“loglevel”: 0,
“mail_from_address”: “REMOVED SENSITIVE VALUE”,
“mail_smtpmode”: “smtp”,
“tempdirectory”: “/tmp”,
“trashbin_retention_obligation”: 15,
“0”: 30,
“versions_retention_obligation”: 30,
“1”: “auto”,
“minimum.supported.desktop.version”: “1.7.0”,
“activity_expire_days”: 365,
“enabledPreviewProviders”: [
“maintenance”: false,
“appstore.experimental.enabled”: true,
“mail_smtphost”: “REMOVED SENSITIVE VALUE”,
“mail_smtpport”: “25”,
“theme”: “”,
“singleuser”: false

**List of activated apps:**

  - activity: 2.4.0
  - comments: 0.3.0
  - configreport: 0.1.1
  - dav: 0.4.0
  - external: 1.2
  - federatedfilesharing: 0.3.1
  - federation: 0.1.0
  - files: 1.5.1
  - files_external: 0.7.1
  - files_sharing: 0.11.0
  - files_trashbin: 0.9.1
  - files_versions: 1.3.0
  - files_videoplayer: 0.9.8
  - firstrunwizard: 1.1
  - gallery: 16.1.0
  - market: 0.2.5
  - notifications: 0.3.5
  - provisioning_api: 0.5.0
  - systemtags: 0.3.0
  - templateeditor: 0.3.1
  - updatenotification: 0.2.1
  - user_external: 0.4
  - encryption

Client configuration

Browser: Versão 70.0.3538.102 (Versão oficial) 64 bits

Operating system: Windows 10


Web server error log

Insert your webserver log here

ownCloud log (data/owncloud.log)

Insert your ownCloud log here

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log 
c) ...


I don’t think anyone here has much experience with the virtual file system since it’s a new and “experimental” feature.

You would be best advised to open an issue here:

1 Like

I have a fresh owncloud installation and I have noet enabled the virtual files feature.

The problem keeps happening.

It´s something very weird. The client uploads the file. But, if I enter the web interface and refresh the folder, the file is deleted from the file system, but not from owncloud DB.

What I have noticed is that it happens with .xls .doc .ods files. With .txt it does not happen.

I have tried many different environments and it keeps happening.

I have no more clues how to fix it.

Please, help.


Ricardo Auada


could it be possible that this is the same issue like discussed below?

Hi Tom!

It is a similar issue, but for me it happens with excel/libreoffice files as well.

We downgraded to version 1.0.8.x and it seems to have fixed the issue. We are following up.

It seems, there’s something very bad with version 10.0.10.x


Ricardo Auada


even if its slightly different i think this is valid here as well:

Hi Tom !

Agree !

Ticket #33708


Ricardo Auada

1 Like