Support intro
Sorry to hear you’re facing problems. 
The community help forum (help.nextcloud.com) is for home and non-enterprise users. Support is provided by other community members on a best effort / “as available” basis. All of those responding are volunteering their time to help you.
If you’re using Nextcloud in a business/critical setting, paid and SLA-based support services can be accessed via portal.nextcloud.com where Nextcloud engineers can help ensure your business keeps running smoothly.
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:
- most of office issues are handled in Collabora integration guide
- 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):
32.0.6
- Operating system and version (e.g., Ubuntu 24.04):
Ubuntu 24.04
- Web server and version (e.g, Apache 2.4.25):
AIO
- Reverse proxy and version _(e.g. nginx 1.27.2)
nginx proxy manager 2.10.3
- PHP version (e.g, 8.3):
AIO version
- Is this the first time you’ve seen this error? (Yes / No):
Yes
- When did this problem seem to first start?
since i have NC AIO
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
AIO
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issue you are facing:
Collabora fails to open docs, following message displayed:
Failed to establish socket connection or socket connection closed unexpectedly. The reverse proxy might be misconfigured, please contact the administrator. For more info on proxy configuration please checkout
Steps to replicate it (hint: details matter!):
-
Try to open a document, logged in or not
-
error message appears and network shows a logo that cannot be retrieved
-
Not sure what i did wrong because everything is pretty much defined by NC AIO. NC itself works perfectly.
Log entries
Nextcloud
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.
PASTE
Web server / Reverse Proxy
The output of your Apache/nginx/system log in /var/log/____:
nothing in there ^^
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!):
{
"system": {
"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": "cloud.mydomain.com",
"overwriteprotocol": "https",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"localhost",
"cloud.mydomain.com"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "pgsql",
"version": "32.0.6.1",
"overwrite.cli.url": "https:\/\/cloud.mydomain.com\/",
"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,
"loglevel": 2,
"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": {
"1": "OC\\Preview\\Image",
"2": "OC\\Preview\\MarkDown",
"3": "OC\\Preview\\MP3",
"4": "OC\\Preview\\TXT",
"5": "OC\\Preview\\OpenDocument",
"6": "OC\\Preview\\Movie",
"7": "OC\\Preview\\Krita",
"0": "OC\\Preview\\Imaginary",
"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",
"updatedirectory": "\/nc-updater",
"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": true,
"trusted_proxies": "***REMOVED SENSITIVE VALUE***",
"preview_imaginary_url": "***REMOVED SENSITIVE VALUE***",
"preview_imaginary_key": "***REMOVED SENSITIVE VALUE***",
"mail_smtpsecure": "ssl",
"mail_sendmailmode": "smtp",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "465",
"mail_smtpauth": 1,
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"updatechecker": false,
"config_preset": 2,
"DOMAIN": "cloud.mydomain.com",
"AIO_VERSION": "v12.7.0"
}
}
Apps
The output of occ app:list (if possible).
Enabled:
- activity: 5.0.0
- admin_audit: 1.22.0
- bruteforcesettings: 5.0.0
- calendar: 6.2.1
- circles: 32.0.0
- cloud_federation_api: 1.16.0
- comments: 1.22.0
- contacts: 8.3.4
- contactsinteraction: 1.13.1
- dashboard: 7.12.0
- dav: 1.34.2
- deck: 1.16.3
- federatedfilesharing: 1.22.0
- federation: 1.22.0
- files: 2.4.0
- files_antivirus: 6.1.0
- files_downloadlimit: 5.0.0-dev.0
- files_external: 1.24.1
- files_fulltextsearch: 32.0.2
- files_pdfviewer: 5.0.0
- files_reminders: 1.5.0
- files_sharing: 1.24.1
- files_trashbin: 1.22.0
- files_versions: 1.25.0
- firstrunwizard: 5.0.0
- forms: 5.2.4
- fulltextsearch: 32.0.0
- fulltextsearch_elasticsearch: 32.0.2
- groupfolders: 20.1.12
- guests: 4.6.0
- logreader: 5.0.0
- lookup_server_connector: 1.20.0
- mail: 5.7.1
- nextcloud-aio: 0.8.0
- nextcloud_announcements: 4.0.0
- notes: 4.13.0
- notifications: 5.0.0
- notify_push: 1.3.0
- oauth2: 1.20.0
- password_policy: 4.0.0
- photos: 5.0.0
- privacy: 4.0.0
- profile: 1.1.0
- provisioning_api: 1.22.0
- recommendations: 5.0.0
- related_resources: 3.0.0
- richdocuments: 9.0.3
- serverinfo: 4.0.0
- settings: 1.15.1
- sharebymail: 1.22.0
- spreed: 22.0.9
- support: 4.0.0
- survey_client: 4.0.0
- systemtags: 1.22.0
- tasks: 0.17.1
- text: 6.0.1
- theming: 2.7.0
- twofactor_backupcodes: 1.21.0
- twofactor_totp: 14.0.0
- updatenotification: 1.22.0
- user_status: 1.12.0
- viewer: 5.0.0
- weather_status: 1.12.0
- webhook_listeners: 1.3.0
- whiteboard: 1.5.7
- workflowengine: 2.14.0
Disabled: - app_api: 32.0.0 (installed 4.0.5)
- cadviewer: 10.10.7 (installed 10.10.7)
- encryption: 2.20.0
- polls: 8.6.3 (installed 8.6.3)
- snappymail: 2.38.2 (installed 2.38.2)
- suspicious_login: 10.0.0
- twofactor_nextcloud_notification: 6.0.0
- user_ldap: 1.23.0
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.
, be patient… there are some clued up folks here that’ll help you get to the bottom of this.