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Sorry to hear you’re facing problems. 
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Getting help
In order to help you as efficiently (and quickly!) as possible, please fill in as much of the below requested information as you can.
Before clicking submit: Please check if your query is already addressed via the following resources:
- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
(Utilizing these existing resources is typically faster. It also helps reduce the load on our generous volunteers while elevating the signal to noise ratio of the forums otherwise arising from the same queries being posted repeatedly).
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. 
The Basics
- Nextcloud Server version (e.g., 29.x.x):
- 31.0.9 - 31.0.9.1
- Operating system and version (e.g., Ubuntu 24.04):
- Linux 6.12.24-Unraid #1 SMP PREEMPT_DYNAMIC Sat May 3 00:12:52 PDT 2025 x86_64
- Web server and version (e.g, Apache 2.4.25):
- Apache/2.4.65 (Unix) (fpm-fcgi)
- Reverse proxy and version _(e.g. nginx 1.27.2)
- Apache/2.4.65 (Unix) (fpm-fcgi)
- PHP version (e.g, 8.3):
- 8.3.26
- Is this the first time you’ve seen this error? (Yes / No):
No - has always been happening
- When did this problem seem to first start?
Since first install - is now just annoying me
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
AIO container on Unraid via Community Apps
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
Yes - Cloudflare tunnel
Summary of the issue you are facing:
When opening an office document am presented with the error:
Document loading failed
Failed to establish socket connection or socket connection closed unexpectedly. The reverse proxy might be misconfigured, please contact the administrator……
I’ve reviewed URL supplied, but I’m not sure what is needed. Have also seen other posts with the same referring to WOPI allow lists. Confirming I have 0.0.0.0/0 set. (Have tried many variations)
My Collabora settings in the “Office” settings are:
Collabora Online server is reachable.
Collabora Online Development Edition 25.04.6.1 c042625181
URL used by the browser: https://www.<mydomain>.co.nz
Nextcloud URL used by Collabora: http://nextcloud-aio-apache:23973
Steps to replicate it (hint: details matter!):
-
Open different office documents gives same error
-
Stopping AIO Master container, removing Collabora, restarting, deleting old nextcloud-aio-collabora to clean up. Then reversing - stopping AIO, adding Collabora etc and starting again (checking WOPI has 0.0.0.0/0) gives the same settings as above and the same failure
-
Websockets is allowed in Cloudflare domain.
Log entries
Nextcloud
Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.
https://pastebin.com/EQtXE3B6
Web Browser
If the problem is related to the Web interface, open your browser inspector Console and Network tabs while refreshing (reloading) and reproducing the problem. Provide any relevant output/errors here that appear.
not applicable - fails in all browsers
Web server / Reverse Proxy
The output of your Apache/nginx/system log in /var/log/____:
Connection to nextcloud-aio-nextcloud (172.20.0.8) 9000 port [tcp/*] succeeded!
/usr/lib/python3.12/site-packages/supervisor/options.py:13: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
import pkg_resources
[Mon Oct 27 11:24:31.636446 2025] [mpm_event:notice] [pid 48:tid 48] AH00489: Apache/2.4.65 (Unix) configured -- resuming normal operations
[Mon Oct 27 11:24:31.636469 2025] [core:notice] [pid 48:tid 48] AH00094: Command line: '/usr/local/apache2/bin/httpd -D FOREGROUND'
{"level":"info","ts":1761517471.639544,"msg":"maxprocs: Leaving GOMAXPROCS=16: CPU quota undefined"}
{"level":"info","ts":1761517471.6396718,"msg":"GOMEMLIMIT is updated","package":"github.com/KimMachineGun/automemlimit/memlimit","GOMEMLIMIT":59597247283,"previous":9223372036854775807}
{"level":"info","ts":1761517471.6396918,"msg":"using config from file","file":"/tmp/Caddyfile"}
{"level":"info","ts":1761517471.640872,"msg":"adapted config to JSON","adapter":"caddyfile"}
{"level":"info","ts":1761517471.6453974,"msg":"serving initial configuration"}
Waiting for Nextcloud to start...
Waiting for Nextcloud to start...
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
{
"one-click-instance": true,
"one-click-instance.user-limit": 100,
"memcache.local": "\\OC\\Memcache\\APCu",
"apps_paths": [
{
"path": "\/var\/www\/html\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/www\/html\/custom_apps",
"url": "\/custom_apps",
"writable": true
}
],
"check_data_directory_permissions": false,
"memcache.distributed": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"password": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"overwritehost": "www.mydomain.co.nz",
"overwriteprotocol": "https",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"localhost",
"www.mydomain.co.nz"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "pgsql",
"version": "31.0.9.1",
"overwrite.cli.url": "https:\/\/www.mydomain.co.nz\/",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"instanceid": "***REMOVED SENSITIVE VALUE***",
"maintenance": false,
"updatedirectory": "\/nc-updater",
"loglevel": "2",
"app_install_overwrite": [
"nextcloud-aio"
],
"log_type": "file",
"logfile": "\/var\/www\/html\/data\/nextcloud.log",
"log_rotate_size": 10485760,
"log.condition": {
"apps": [
"admin_audit"
]
},
"preview_max_x": 2048,
"preview_max_y": 2048,
"jpeg_quality": 60,
"enabledPreviewProviders": {
"0": "OC\\Preview\\Imaginary",
"1": "OC\\Preview\\MarkDown",
"2": "OC\\Preview\\MP3",
"3": "OC\\Preview\\TXT",
"4": "OC\\Preview\\OpenDocument",
"5": "OC\\Preview\\Movie",
"6": "OC\\Preview\\Krita",
"7": "OC\\Preview\\ImaginaryPDF",
"23": "OC\\Preview\\ImaginaryPDF"
},
"enable_previews": true,
"upgrade.disable-web": true,
"mail_smtpmode": "smtp",
"trashbin_retention_obligation": "auto, 30",
"versions_retention_obligation": "auto, 30",
"activity_expire_days": 30,
"simpleSignUpLink.shown": false,
"share_folder": "\/Shared",
"one-click-instance.link": "https:\/\/nextcloud.com\/all-in-one\/",
"upgrade.cli-upgrade-link": "https:\/\/github.com\/nextcloud\/all-in-one\/discussions\/2726",
"maintenance_window_start": 100,
"allow_local_remote_servers": true,
"davstorage.request_timeout": 3600,
"documentation_url.server_logs": "https:\/\/github.com\/nextcloud\/all-in-one\/discussions\/5425",
"htaccess.RewriteBase": "\/",
"dbpersistent": false,
"auth.bruteforce.protection.enabled": true,
"ratelimit.protection.enabled": true,
"files_external_allow_create_new_local": false,
"trusted_proxies": "***REMOVED SENSITIVE VALUE***",
"preview_imaginary_url": "***REMOVED SENSITIVE VALUE***",
"preview_imaginary_key": "***REMOVED SENSITIVE VALUE***",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_sendmailmode": "smtp",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtpauth": true,
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "587",
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"default_phone_region": "NZ",
"memories.db.triggers.fcu": true,
"memories.exiftool": "\/var\/www\/html\/custom_apps\/memories\/bin-ext\/exiftool-amd64-musl",
"memories.vod.path": "\/var\/www\/html\/custom_apps\/memories\/bin-ext\/go-vod-amd64",
"memories.vod.ffmpeg": "\/usr\/bin\/ffmpeg",
"memories.vod.ffprobe": "\/usr\/bin\/ffprobe",
"updatechecker": false,
"DOMAIN": "www.mydomain.co.nz"
}
Apps
The output of occ app:list (if possible).
Enabled:
- activity: 4.0.0
- admin_audit: 1.21.0
- bruteforcesettings: 4.0.0
- calendar: 5.5.7
- circles: 31.0.0
- comments: 1.21.0
- contacts: 7.3.4
- contactsinteraction: 1.12.0
- dashboard: 7.11.0
- deck: 1.15.3
- federation: 1.21.0
- files_downloadlimit: 4.0.0
- files_pdfviewer: 4.0.0
- files_reminders: 1.4.0
- files_sharing: 1.23.1
- files_trashbin: 1.21.0
- files_versions: 1.24.0
- firstrunwizard: 4.0.0
- logreader: 4.0.0
- memories: 7.7.0
- nextcloud-aio: 0.8.0
- nextcloud_announcements: 3.0.0
- notes: 4.12.3
- notifications: 4.0.0
- notify_push: 1.2.0
- password_policy: 3.0.0
- photos: 4.0.0
- previewgenerator: 5.10.0
- privacy: 3.0.0
- recommendations: 4.0.0
- related_resources: 2.0.0
- richdocuments: 8.7.6
- serverinfo: 3.0.0
- sharebymail: 1.21.0
- support: 3.0.0
- survey_client: 3.0.0
- systemtags: 1.21.1
- tasks: 0.17.0
- text: 5.0.0
- twofactor_totp: 13.0.0-dev.0
- updatenotification: 1.21.0
- user_status: 1.11.0
- weather_status: 1.11.0
- webhook_listeners: 1.2.0
Disabled: - app_api: 5.0.2
- encryption
- files_external
- suspicious_login
- twofactor_nextcloud_notification
- user_ldap
Tips for increasing the likelihood of a response
- Use the
preformatted textformatting option in the editor for all log entries and configuration output. - If screenshots are useful, feel free to include them.
- If possible, also include key error output in text form so it can be searched for.
- Try to edit log output only minimally (if at all) so that it can be ran through analyzers / formatters by those trying to help you.
