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Getting help
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- Official documentation (searchable and regularly updated)
- How to topics and FAQs
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Some or all of the below information will be requested if it isnāt supplied; for fastest response please provide as much as you can. 
The Basics
- Nextcloud Server version (e.g., 29.x.x):
- 31.0.9
- Operating system and version (e.g., Ubuntu 24.04):
- Linux 6.6.87.2-microsoft-standard-WSL2 x86_64
- Web server and version (e.g, Apache 2.4.25):
2.4.65
- Reverse proxy and version _(e.g. nginx 1.27.2)
NA
- PHP version (e.g, 8.3):
- 8.3.26
- Is this the first time youāve seen this error? (Yes / No):
Yes
- When did this problem seem to first start?
On Install
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
AIO, Docker Deskop, Windows
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issue you are facing:
Logs record 127.0.0.1 on failed remote login. It also produces another error related to brute-force training which my research appears to say itās related to duplicate 127.0.0.1 entries, but Iām not 100% if they are related.
I suspect none of the protection systems (brute-force,suspicious log-in, or fail2ban will work this problem in place.
Steps to replicate it (hint: details matter!):
- Simply fail a log in.
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.
{"reqId":"TmqoRySX3ICM2bbEqiET","level":2,"time":"2025-10-31T10:39:08+00:00","remoteAddr":"127.0.0.1","user":"--","app":"no app in context","method":"POST","url":"/login","message":"Login failed: Admin disabled (Remote IP: 127.0.0.1)","userAgent":"Mozilla/5.0 (Android 16; Mobile; rv:144.0) Gecko/144.0 Firefox/144.0","version":"31.0.9.1","data":[],"id":"6904fb7c39150"}
{"reqId":"GTeEIaGnw5QfT1IaunhP","level":3,"time":"2025-10-30T22:25:00+00:00","remoteAddr":"","user":"--","app":"suspicious_login","method":"","url":"--","message":"Caught unknown error during IPv4 background training","userAgent":"--","version":"31.0.9.1","exception":{"Exception":"Rubix\\ML\\Exceptions\\InvalidArgumentException","Message":"Datasets must have the same number of columns, 48 expected, but 16 given.","Code":0,"Trace":[{"file":"/var/www/html/apps/suspicious_login/lib/Service/DataLoader.php","line":126,"function":"merge","class":"Rubix\\ML\\Datasets\\Labeled","type":"->","args":[{"__class__":"Rubix\\ML\\Datasets\\Labeled"}]},{"file":"/var/www/html/apps/suspicious_login/lib/Service/TrainService.php","line":55,"function":"generateRandomShuffledData","class":"OCA\\SuspiciousLogin\\Service\\DataLoader","type":"->","args":[{"__class__":"OCA\\SuspiciousLogin\\Service\\CollectedData"},{"__class__":"OCA\\SuspiciousLogin\\Service\\MLP\\Config"},{"__class__":"OCA\\SuspiciousLogin\\Service\\Ipv4Strategy"}]},{"file":"/var/www/html/apps/suspicious_login/lib/BackgroundJob/TrainJobIpV4.php","line":47,"function":"train","class":"OCA\\SuspiciousLogin\\Service\\TrainService","type":"->","args":[{"__class__":"OCA\\SuspiciousLogin\\Service\\MLP\\Config"},{"__class__":"OCA\\SuspiciousLogin\\Service\\TrainingDataConfig"},{"__class__":"OCA\\SuspiciousLogin\\Service\\Ipv4Strategy"}]},{"file":"/var/www/html/lib/public/BackgroundJob/Job.php","line":61,"function":"run","class":"OCA\\SuspiciousLogin\\BackgroundJob\\TrainJobIpV4","type":"->","args":[null]},{"file":"/var/www/html/lib/public/BackgroundJob/TimedJob.php","line":97,"function":"start","class":"OCP\\BackgroundJob\\Job","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"}]},{"file":"/var/www/html/lib/public/BackgroundJob/TimedJob.php","line":84,"function":"start","class":"OCP\\BackgroundJob\\TimedJob","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"}]},{"file":"/var/www/html/cron.php","line":170,"function":"execute","class":"OCP\\BackgroundJob\\TimedJob","type":"->","args":[{"__class__":"OC\\BackgroundJob\\JobList"}]}],"File":"/var/www/html/apps/suspicious_login/vendor/rubix/ml/src/Datasets/Labeled.php","Line":368,"message":"Caught unknown error during IPv4 background training","exception":[],"CustomMessage":"Caught unknown error during IPv4 background training"},"id":"6904fb7c39322"}
{"reqId":"g6wFKd92CSxXGnwtBEFn","level":2,"time":"2025-10-30T22:18:35+00:00","remoteAddr":"127.0.0.1","user":"--","app":"no app in context","method":"POST","url":"/login","message":"Login failed: admin disabled (Remote IP: 127.0.0.1)","userAgent":"Mozilla/5.0 (Android 16; Mobile; rv:144.0) Gecko/144.0 Firefox/144.0","version":"31.0.9.1","data":[],"id":"6904fb7c39329"}
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.
NA
Web server / Reverse Proxy
The output of your Apache/nginx/system log in /var/log/____:
2025-10-31 06:45:31
Waiting for Nextcloud to start...
2025-10-31 06:45:37
Waiting for Nextcloud to start...
2025-10-31 06:45:42
Waiting for Nextcloud to start...
2025-10-31 06:45:47
Waiting for Nextcloud to start...
2025-10-31 06:45:52
Waiting for Nextcloud to start...
2025-10-31 06:45:57
Waiting for Nextcloud to start...
2025-10-31 06:46:02
Waiting for Nextcloud to start...
2025-10-31 06:46:07
Waiting for Nextcloud to start...
2025-10-31 06:46:12
Waiting for Nextcloud to start...
2025-10-31 06:46:17
Waiting for Nextcloud to start...
2025-10-31 06:46:22
Connection to nextcloud-aio-nextcloud (172.19.0.9) 9000 port [tcp/*] succeeded!
2025-10-31 06:46:22
/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.ā The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
2025-10-31 06:46:22
import pkg_resources
2025-10-31 06:46:23
{"level":"info","ts":1761907583.9168868,"msg":"maxprocs: Leaving GOMAXPROCS=4: CPU quota undefined"}
2025-10-31 06:46:23
{"level":"info","ts":1761907583.9171436,"msg":"GOMEMLIMIT is updated","package":"github.com/KimMachineGun/automemlimit/memlimit","GOMEMLIMIT":7496176435,"previous":9223372036854775807}
2025-10-31 06:46:23
{"level":"info","ts":1761907583.9171758,"msg":"using config from file","file":"/tmp/Caddyfile"}
2025-10-31 06:46:23
{"level":"info","ts":1761907583.925758,"msg":"adapted config to JSON","adapter":"caddyfile"}
2025-10-31 06:46:23
[Fri Oct 31 06:46:23.934104 2025] [mpm_event:notice] [pid 63:tid 63] AH00489: Apache/2.4.65 (Unix) configured -- resuming normal operations
2025-10-31 06:46:23
[Fri Oct 31 06:46:23.934222 2025] [core:notice] [pid 63:tid 63] AH00094: Command line: '/usr/local/apache2/bin/httpd -D FOREGROUND'
2025-10-31 06:46:23
{"level":"info","ts":1761907583.9806254,"msg":"failed to sufficiently increase receive buffer size (was: 208 kiB, wanted: 7168 kiB, got: 416 kiB). See https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizesā for details."}
2025-10-31 06:46:23
{"level":"info","ts":1761907583.9934454,"msg":"serving initial configuration"}
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
}
],
"appsallowlist": false,
"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": "nextcloud.domain.com",
"overwriteprotocol": "https",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"localhost",
"nextcloud.domain.com"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "pgsql",
"version": "31.0.9.1",
"overwrite.cli.url": "https:\/\/ncloud.ooguy.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,
"updatedirectory": "\/nc-updater",
"loglevel": 1,
"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\\OpenDocument",
"2": "OC\\Preview\\Movie",
"3": "OC\\Preview\\Krita",
"4": "OC\\Preview\\Image",
"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": 7200,
"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_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_sendmailmode": "smtp",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "465",
"mail_smtpauth": true,
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"default_phone_region": "US",
"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",
"memories.viewer.high_res_cond_default": "always",
"memories.gis_type": 2,
"session_lifetime": "10800",
"remember_login_cookie_lifetime": "86400",
"session_keepalive": "true",
"auto_logout": "false",
"twofactor_enforced": "true",
"twofactor_enforced_groups": [
"Users",
"Wolfpack",
"admin"
],
"twofactor_enforced_excluded_groups": [],
"preview_max_memory": 256,
"preview_max_filesize_image": 128,
"data-fingerprint": "0b246e18ee09fef0ff1be0c17b563dae",
"documentation_url.server_logs": "https:\/\/github.com\/nextcloud\/all-in-one\/discussions\/5425",
"updatechecker": false,
"app_install_overwrite": [
"apporder"
],
"onlyoffice": {
"jwt_secret": "***REMOVED SENSITIVE VALUE***",
"jwt_header": "AuthorizationJwt"
},
"forbidden_filename_basenames": [
"con",
"prn",
"aux",
"nul",
"com0",
"com1",
"com2",
"com3",
"com4",
"com5",
"com6",
"com7",
"com8",
"com9",
"com\u00b9",
"com\u00b2",
"com\u00b3",
"lpt0",
"lpt1",
"lpt2",
"lpt3",
"lpt4",
"lpt5",
"lpt6",
"lpt7",
"lpt8",
"lpt9",
"lpt\u00b9",
"lpt\u00b2",
"lpt\u00b3"
],
"forbidden_filename_characters": [
"<",
">",
":",
"\"",
"|",
"?",
"*",
"\\",
"\/"
],
"forbidden_filename_extensions": [
" ",
".",
".filepart",
".part"
],
"mail_smtpsecure": "ssl",
"forwarded_for_headers": [
"HTTP_X_FORWARDED_FOR",
"HTTP_X_REAL_IP"
],
"DOMAIN": "nextcloud.domain.com"
}
}
