The Basics
- Nextcloud Server version :
32.0.3.2
- Operating system and version (e.g., Ubuntu 24.04):
Docker container (Debian-based, from official nextcloud:latest image)
- Web server and version (e.g, Apache 2.4.25):
Apache 2.4.65 (Debian)
- Reverse proxy and version _(e.g. nginx 1.27.2)
Traefik
- PHP version (e.g, 8.3):
8.3.28
- Is this the first time you’ve seen this error? (Yes / No):
Yes - sync was working before
- When did this problem seem to first start?
After copying files directly into the local Nextcloud sync folder
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
Docker Compose with official nextcloud:latest image
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
No
Summary of the issue you are facing:
Desktop sync client (4.0.4daily on CachyOS Linux) fails to transfer any data. Client detects tens of thousands of files to sync but UI shows “Synchronizing file 0 out of X” where X rapidly increases, then displays: “We could not process your request, please try synchronizing again later.” Server logs show only PROPFIND requests (directory listings), zero PUT/GET requests. No errors in Nextcloud logs. Web interface and mobile apps work fine.
Steps to replicate it:
Not sure how to replicate, I have 102GB of data on server and sync simply stopped working suddenty - now nothing sync, neither uploading nor downloading.
- Changed sync folder location => same issue
- Cleared client cache => no change
- Ran occ files:scan user => completed successfully
- Completely removed client config (rm -rf ~/.config/Nextcloud/ ~/.local/share/Nextcloud/)
- Deleted account and reconfigured from scratch with fresh empty sync folder => same issue persists
- Verified all server configs and limits
Log entries
Nextcloud
Only deprecation warnings (level 0), no actual errors during sync attempts:
{“reqId”:“GABU8dFdA21Aq8HA0UuV”,“level”:0,“time”:“2026-01-03T03:31:32+00:00”,“remoteAddr”:“...",“user”:“user”,“app”:“dav”,“method”:“PROPFIND”,“url”:“/remote.php/dav/files/user/”,“userAgent”:“Mozilla/5.0 (Linux) mirall/4.0.4daily (Nextcloud, cachyos-6.18.2-2-cachyos ClientArchitecture: x86_64 OsArchitecture: x86_64)”,“version”:“32.0.3.2”}
Web server / Reverse Proxy
Apache access logs show only PROPFIND requests, no PUT/GET for actual file transfers:
192.0.2.10 - user [03/Jan/2026:03:31:32 +0000] "PROPFIND /remote.php/dav/files/user/ HTTP/1.1" 207 234 "-" "Mozilla/5.0 (Linux) mirall/4.0.4daily (Nextcloud, cachyos-6.18.2-2-cachyos ClientArchitecture: x86_64 OsArchitecture: x86_64)"
No errors in Apache error.log related to sync.
Desktop Client Logs
#=#=#=# Syncrun finished 2026-01-03T04:10:06Z (last step: 136 msec, total: 849 msec)
#=#=#=# Syncrun started 2026-01-03T04:11:04Z
#=#=#=# Syncrun finished 2026-01-03T04:11:59Z (last step: 55710 msec, total: 55710 msec)
#=#=#=# Syncrun started 2026-01-03T04:12:11Z
#=#=#=# Syncrun finished 2026-01-03T04:13:08Z (last step: 57057 msec, total: 57057 msec)
#=#=#=# Syncrun started 2026-01-03T04:23:35Z
#=#=#=# Syncrun finished 2026-01-03T04:24:32Z (last step: 57580 msec, total: 57580 msec)
Configuration
Nextcloud
{
"system": {
"filelocking.enabled": true,
"chunk_uploads": false,
"htaccess.RewriteBase": "\/",
"apps_paths": [
{
"path": "\/var\/www\/html\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/www\/html\/custom_apps",
"url": "\/custom_apps",
"writable": true
}
],
"overwritehost": "cloud.mydomain.com",
"overwriteprotocol": "https",
"upgrade.disable-web": true,
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"cloud.mydomain.com"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "32.0.3.2",
"overwrite.cli.url": "https:\/\/cloud.mydomain.com",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"trusted_proxies": "***REMOVED SENSITIVE VALUE***",
"max_chunk_size": "10737418240",
"forwarded_for_headers": [
"HTTP_X_FORWARDED_FOR"
],
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtpmode": "smtp",
"mail_sendmailmode": "smtp",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"debug": false,
"loglevel": 0,
"maintenance": false,
"memcache.local": "\\OC\\Memcache\\APCu",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpauth": true,
"mail_smtpstreamoptions": {
"ssl": {
"allow_self_signed": true,
"verify_peer": false,
"verify_peer_name": false
}
},
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "465",
"memcache.distributed": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"password": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"htaccess.IgnoreFrontController": true,
"mail_smtpsecure": "ssl",
"maintenance_window_start": 6,
"enabledPreviewProviders": [
"OC\\Preview\\Movie",
"OC\\Preview\\PNG",
"OC\\Preview\\JPEG",
"OC\\Preview\\GIF",
"OC\\Preview\\BMP"
],
"files.chunked_upload.max_size": 20971520,
"data-fingerprint": "bbb361d6c9dbff2b86e0d7a215589c19"
}
}
(Note: chunk_uploads was set to false - I reset it to true but the problem persists)
PHP Environment Variables (Docker)
PHP_MEMORY_LIMIT=4096M
PHP_UPLOAD_MAX_FILESIZE=10G
PHP_POST_MAX_SIZE=10G
PHP_MAX_EXECUTION_TIME=7200
PHP_MAX_INPUT_TIME=7200
APACHE_BODY_LIMIT=0
Apache MPM
ServerLimit 400
MaxRequestWorkers 400
MaxConnectionsPerChild 1000
Timeout 3600
KeepAliveTimeout 300
Server
- Quota: Unlimited
- Disk space: 2.5TB available (27% usage)
- MariaDB: max_allowed_packet=1G
- Redis: 2GB maxmemory
Apps
Enabled:
- activity: 5.0.0-dev.0
- bruteforcesettings: 5.0.0-dev.0
- calendar: 6.1.1
- circles: 32.0.0
- cloud_federation_api: 1.16.0
- comments: 1.22.0
- contacts: 8.1.1
- contactsinteraction: 1.13.1
- dashboard: 7.12.0
- dav: 1.34.2
- federatedfilesharing: 1.22.0
- federation: 1.22.0
- files: 2.4.0
- files_downloadlimit: 5.0.0-dev.0
- files_pdfviewer: 5.0.0-dev.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-dev.0
- logreader: 5.0.0-dev.0
- lookup_server_connector: 1.20.0
- nextcloud_announcements: 4.0.0-dev.0
- notes: 4.12.4
- notifications: 5.0.0-dev.0
- oauth2: 1.20.0
- password_policy: 4.0.0-dev.0
- photos: 5.0.0-dev.1
- privacy: 4.0.0-dev.0
- profile: 1.1.0
- provisioning_api: 1.22.0
- recommendations: 5.0.0-dev.0
- related_resources: 3.0.0-dev.0
- richdocuments: 9.0.2
- richdocumentscode: 25.4.702
- serverinfo: 4.0.0-dev.0
- settings: 1.15.1
- sharebymail: 1.22.0
- support: 4.0.0-dev.0
- survey_client: 4.0.0-dev.0
- systemtags: 1.22.0
- text: 6.0.1
- theming: 2.7.0
- twofactor_backupcodes: 1.21.0
- updatenotification: 1.22.0
- user_status: 1.12.0
- viewer: 5.0.0-dev.0
- weather_status: 1.12.0
- webhook_listeners: 1.3.0
- workflowengine: 2.14.0
Disabled:
- admin_audit: 1.22.0
- app_api: 32.0.0 (installed 32.0.0)
- encryption: 2.20.0
- files_external: 1.24.0
- spreed: 22.0.4 (installed 22.0.4)