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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.
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- Official documentation (searchable and regularly updated)
- How to topics and FAQs
- Forum search
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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):
31.0.4
- Operating system and version (e.g., Ubuntu 24.04):
Ubuntu 24.04.2
- Web server and version (e.g, Apache 2.4.25):
Apache 2.4.58
- Reverse proxy and version _(e.g. nginx 1.27.2)
External
- PHP version (e.g, 8.3):
8.2
- Is this the first time you’ve seen this error? (Yes / No):
Yes
- When did this problem seem to first start?
A week ago
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
Bare Metal
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
Yes
Summary of the issue you are facing:
When uploading files upward of 20GB there will be an issue where it will completly the upload but when it comes to assembling the chunks of the file it will fail. I have tried with and without my cloudflare proxy and its still the same issue. After looking through the logs it seems to install all the chunks correctly then it will seemingly start to delete them all again. Not sure why this is happening. I have tried completly reinstalling nextcloud. There logs suggest that it seems to not be able to find the uploaded chunks and that is what sets off the chain of deleting the rest. I have checked the permissions of my nfs mount along with any config files on the system.
Steps to replicate it (hint: details matter!):
- Install Nextcloud
- Create NFS mount and set that to data directory
- Start up nextcloud and create account
- Change tmp folder to be inside the NFS mount rather than the root directory due to storage limitations
- Attempt to upload any large files over 20GB
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.
Due to there being little to no useful logs after the error I was getting during upload I changed to log level to 0 to try and get a better idea of what was going on. I have attached below any logs that could be of interest and that occured a the same time as the error. Only two of them being classed as Errors.
The logs below are from a previous install so the timings wont be correct buit its the same issue. This shows that it attmpts to move the upload chunks fails then starts deleting them
{"reqId":"uCM47NcwEVx811Aqwpzb","level":0,"time":"2025-04-15T02:22:41+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"PUT","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/265","mess>
{"reqId":"uCM47NcwEVx811Aqwpzb","level":0,"time":"2025-04-15T02:22:41+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"PUT","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/265","mess>
{"reqId":"uCM47NcwEVx811Aqwpzb","level":0,"time":"2025-04-15T02:22:41+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"PUT","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/265","mess>
{"reqId":"gWNirdYp6Ofn80ORK4Mp","level":0,"time":"2025-04-15T02:23:28+00:00","remoteAddr":"192.168.1.133","user":"Hat","app":"dav","method":"GET","url":"/ocs/v2.php/apps/user_status/api/v1/user_status?format=json","message":"No calendar>
{"reqId":"hoj3hiNbMzVWUPCdVRW2","level":0,"time":"2025-04-15T02:23:52+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"GET","url":"/ocs/v2.php/apps/notifications/api/v2/notifications","message":"dirty >
{"reqId":"ZZaY2CHEoeTgA1s7lxTx","level":0,"time":"2025-04-15T02:23:57+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"dav","method":"PUT","url":"/ocs/v2.php/apps/user_status/api/v1/heartbeat?format=json","message":"No calendar ev>
{"reqId":"JdSd6LLakB5n1sX157CV","level":0,"time":"2025-04-15T02:24:21+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"DELETE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f","messa>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"core","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","message":"!!! >
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":0,"time":"2025-04-15T02:24:22+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"NiWi1Iq8HODMkiCQwj4c","level":0,"time":"2025-04-15T02:24:27+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"GET","url":"/index.php/logout?requesttoken=%2FF%2FwS7DuCofsHcUdQm9zi%2BrXvBsM4FpUP>
{"reqId":"NiWi1Iq8HODMkiCQwj4c","level":0,"time":"2025-04-15T02:24:28+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"GET","url":"/index.php/logout?requesttoken=%2FF%2FwS7DuCofsHcUdQm9zi%2BrXvBsM4FpUP>
{"reqId":"ZNJwKtbKDg5zdS4AlDxB","level":0,"time":"2025-04-15T02:24:28+00:00","remoteAddr":"192.168.1.133","user":"Hat","app":"dav","method":"GET","url":"/ocs/v2.php/apps/user_status/api/v1/user_status?format=json","message":"No calendar>
{"reqId":"iqowNbtsjFqQT7zcXyTl","level":0,"time":"2025-04-15T02:24:28+00:00","remoteAddr":"192.168.1.133","user":false,"app":"bruteForce","method":"GET","url":"/index.php/login?clear=1","message":"The loading of lazy AppConfig values ha>
{"reqId":"QYBjBQ4NlDp2HeGLTCrc","level":3,"time":"2025-04-15T02:24:29+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"MOVE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f/.file","m>
{"reqId":"JdSd6LLakB5n1sX157CV","level":0,"time":"2025-04-15T02:24:29+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"DELETE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f","messa>
{"reqId":"JdSd6LLakB5n1sX157CV","level":0,"time":"2025-04-15T02:24:29+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"DELETE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f","messa>
{"reqId":"JdSd6LLakB5n1sX157CV","level":0,"time":"2025-04-15T02:24:29+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"DELETE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f","messa>
{"reqId":"JdSd6LLakB5n1sX157CV","level":0,"time":"2025-04-15T02:24:29+00:00","remoteAddr":"192.168.1.133","user":"OT","app":"no app in context","method":"DELETE","url":"/remote.php/dav/uploads/OT/web-file-upload-54bd50955c84819f","messa>
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.
No Problem with web interface
Web server / Reverse Proxy
The output of your Apache/nginx/system log in /var/log/____:
No logs avalable
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": {
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"overwriteprotocol": "https",
"file_upload_buffering": false,
"trusted_domains": [
"192.168.1.248",
"files.REDACTED.com",
"localhost",
"192.168.1.177",
"192.168.1.133"
],
"trusted_proxies": "***REMOVED SENSITIVE VALUE***",
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"tempdirectory": "\/mnt\/nextcloud-nfs\/tmp",
"dbtype": "mysql",
"version": "31.0.4.1",
"overwrite.cli.url": "http:\/\/192.168.1.248",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"session_lifetime": 86400,
"session_keepalive": true,
"memcache.local": "\\OC\\Memcache\\Redis",
"memcache.distributed": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 6379,
"timeout": 0
},
"maintenance": false,
"files_chunking": {
"max_chunk_size": "104857600"
},
"theme": "",
"loglevel": 0,
"updater.release.channel": "stable",
"defaultapp": "files"
}
}
Apps
Enabled:
- activity: 4.0.0
- app_api: 5.0.2
- bruteforcesettings: 4.0.0
- calendar: 5.2.1
- circles: 31.0.0
- cloud_federation_api: 1.14.0
- comments: 1.21.0
- contactsinteraction: 1.12.0
- dav: 1.33.0
- federatedfilesharing: 1.21.0
- federation: 1.21.0
- files: 2.3.1
- 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
- lookup_server_connector: 1.19.0
- nextcloud_announcements: 3.0.0
- notifications: 4.0.0
- oauth2: 1.19.1
- ownershiptransfer: 1.1.0
- password_policy: 3.0.0
- privacy: 3.0.0
- profile: 1.0.0
- provisioning_api: 1.21.0
- recommendations: 4.0.0
- related_resources: 2.0.0
- serverinfo: 3.0.0
- settings: 1.14.0
- sharebymail: 1.21.0
- support: 3.0.0
- survey_client: 3.0.0
- systemtags: 1.21.1
- text: 5.0.0
- theming: 2.6.1
- twofactor_backupcodes: 1.20.0
- updatenotification: 1.21.0
- user_status: 1.11.0
- viewer: 4.0.0
- weather_status: 1.11.0
- webhook_listeners: 1.2.0
- workflowengine: 2.13.0
Disabled:
- admin_audit: 1.21.0
- dashboard: 7.11.0 (installed 7.11.0)
- encryption: 2.19.0
- files_external: 1.23.0
- photos: 4.0.0-dev.1 (installed 4.0.0-dev.1)
- suspicious_login: 9.0.1
- twofactor_nextcloud_notification: 5.0.0
- twofactor_totp: 13.0.0-dev.0
- user_ldap: 1.22.0
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.