[Bug]: Cannot add LDAP Users to Teams

[ai-tp]

Since I am unclear on where the issue belongs, this is a report of nextcloud/circles#2521

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Lokal Users can be added without any issues.
When trying to add users from LDAP Backend to a Team it fails with the Message "Some members could not be added"
Deleting the user and letting it get recreated by the next LDAP Sync fixes the issue. But thats not a practical solution.

Steps to reproduce

1. Click on Team
2. Click on Add
3. Search for User > User is found
4. Select User and click Add to Team > "Some members could not be added"

Expected behavior

Users from LDAP Backend can be added to Teams

Nextcloud Server version

33

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.4

Web server

Apache (supported)

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
    "system": {
        "apps_paths": [
            {
                "path": "\/var\/www\/nextcloud\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/var\/www\/nextcloud\/custom_apps",
                "url": "\/custom_apps",
                "writable": true
            }
        ],
        "check_data_directory_permissions": true,
        "memcache.local": "\\OC\\Memcache\\APCu",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0,
            "timeout": 0
        },
        "overwritehost": "***REMOVED SENSITIVE VALUE***",
        "overwriteprotocol": "https",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "***REMOVED SENSITIVE VALUE***"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "version": "33.0.5.1",
        "overwrite.cli.url": "https:\/\***REMOVED SENSITIVE VALUE***\/",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbtableprefix": "oc_",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "maintenance": false,
        "loglevel": "3",
        "log_type": "file",
        "logfile": "\/var\/www\/nextcloud\/data\/nextcloud.log",
        "log_rotate_size": 10485760,
        "log.condition": {
            "apps": [
                "admin_audit"
            ]
        },
        "preview_max_x": 2048,
        "preview_max_y": 2048,
        "jpeg_quality": 60,
        "enabledPreviewProviders": [
            "OC\\Preview\\PNG",
            "OC\\Preview\\JPEG",
            "OC\\Preview\\GIF",
            "OC\\Preview\\BMP",
            "OC\\Preview\\XBitmap",
            "OC\\Preview\\Movie",
            "OC\\Preview\\PDF",
            "OC\\Preview\\MP3",
            "OC\\Preview\\TXT",
            "OC\\Preview\\MarkDown"
        ],
        "enable_previews": true,
        "upgrade.disable-web": true,
        "trashbin_retention_obligation": "30, 30",
        "versions_retention_obligation": "30, 30",
        "activity_expire_days": 30,
        "simpleSignUpLink.shown": false,
        "share_folder": "\/Shared",
        "maintenance_window_start": 1,
        "allow_local_remote_servers": true,
        "davstorage.request_timeout": 3600,
        "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***",
        "default_phone_region": "DE",
        "default_language": "de_DE",
        "default_locale": "de_DE",
        "defaultapp": "",
        "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"
        ],
        "updatechecker": true,
        "app.mail.verify-tls-peer": "false",
        "app_install_overwrite": [],
        "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory",
        "serverid": 0,
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "smtp",
        "mail_smtphost": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpport": "25",
        "mail_sendmailmode": "smtp",
        "mail_smtpstreamoptions": {
            "ssl": {
                "allow_self_signed": false,
                "verify_peer": true,
                "verify_peer_name": true
            }
        }
    }
}

List of activated Apps

Note: Disableing all apps did not help Enabled: - activity: 6.0.0 - admin_audit: 1.23.0 - announcementcenter: 7.4.0 - bruteforcesettings: 6.0.0 - calendar: 6.4.2 - camerarawpreviews: 0.9.0 - circles: 33.0.0 - cloud_federation_api: 1.17.0 - collectives: 4.4.1 - comments: 1.23.0 - contacts: 8.5.1 - contactsinteraction: 1.14.1 - dashboard: 7.13.0 - dav: 1.36.0 - deck: 1.17.2 - external: 8.0.1 - federatedfilesharing: 1.23.0 - federation: 1.23.0 - files: 2.5.0 - files_accesscontrol: 4.0.1 - files_automatedtagging: 4.0.0 - files_downloadlimit: 5.1.0 - files_external: 1.25.1 - files_fulltextsearch: 33.0.0 - files_pdfviewer: 6.0.0 - files_reminders: 1.6.0 - files_sharing: 1.25.2 - files_trashbin: 1.23.0 - files_versions: 1.26.0 - flow_notifications: 4.0.0 - forms: 5.2.9 - fulltextsearch: 33.0.0 - fulltextsearch_elasticsearch: 33.0.0 - group_everyone: 0.1.19 - groupfolders: 21.0.7 - impersonate: 4.0.0 - integration_zammad: 4.0.4 - logreader: 6.0.0 - lookup_server_connector: 1.21.0 - nextcloud_announcements: 5.0.0 - notifications: 6.0.0 - notify_push: 1.3.3 - oauth2: 1.21.0 - password_policy: 5.0.0 - privacy: 5.0.0 - profile: 1.2.0 - provisioning_api: 1.23.0 - recommendations: 6.0.0 - related_resources: 4.0.0 - richdocuments: 10.1.3 - serverinfo: 5.0.0 - settings: 1.16.0 - sharebymail: 1.23.0 - side_menu: 5.3.0 - spreed: 23.0.6 - support: 5.0.0 - survey_client: 5.0.0 - suspicious_login: 11.0.0 - systemtags: 1.23.0 - tables: 2.2.0 - tasks: 0.17.1 - text: 7.0.1 - theming: 2.8.0 - theming_customcss: 1.20.0 - twofactor_backupcodes: 1.22.0 - twofactor_nextcloud_notification: 7.0.0 - twofactor_totp: 15.0.0 - updatenotification: 1.23.0 - user_ldap: 1.24.0 - user_saml: 8.1.2 - user_status: 1.13.0 - viewer: 6.0.0 - weather_status: 1.13.0 - webhook_listeners: 1.5.0 - whiteboard: 1.5.9 - workflow_pdf_converter: 4.0.1 - workflow_script: 4.0.0 - workflowengine: 2.15.0 Disabled: - app_api: 33.0.0 (installed 33.0.0) - encryption: 2.21.0 - firstrunwizard: 6.0.0 (installed 5.0.0) - nextcloud-aio: 0.8.0 (installed 0.8.0) - photos: 6.0.0 (installed 4.0.0) - testing: 1.23.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

{"reqId":"0flP1bZaLhy0vLvwwZXZ","level":3,"time":"2026-06-15T08:49:04+00:00","remoteAddr":"x.xxx.xxx.xx","user":"xxx","app":"","method":"POST","url":"/ocs/v2.php/apps/circles/circles/VitXSQyDkT3QqImhn6gOITIoLYuRcoa/members/multi","scriptName":"/ocs/v2.php","message":"{"event":""}","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36","version":"33.0.5.1","exception":{"Exception":"OCA\Circles\Exceptions\FederatedUserNotFoundException","Message":"singleId not found","Code":404,"Trace":[{"file":"/var/www/nextcloud/apps/circles/lib/Service/FederatedUserService.php","line":849,"function":"getFederatedUserBySingleId","class":"OCA\Circles\Db\CircleRequest","type":"->"},{"file":"/var/www/nextcloud/apps/circles/lib/Service/FederatedUserService.php","line":771,"function":"getFederatedUser_SingleId","class":"OCA\Circles\Service\FederatedUserService","type":"->"},{"file":"/var/www/nextcloud/apps/circles/lib/FederatedItems/SingleMemberAdd.php","line":187,"function":"getFederatedUser","class":"OCA\Circles\Service\FederatedUserService","type":"->"},{"file":"/var/www/nextcloud/apps/circles/lib/FederatedItems/MassiveMemberAdd.php","line":51,"function":"generateMember","class":"OCA\Circles\FederatedItems\SingleMemberAdd","type":"->"},{"file":"/var/www/nextcloud/apps/circles/lib/Service/FederatedEventService.php","line":116,"function":"verify","class":"OCA\Circles\FederatedItems\MassiveMemberAdd","type":"->"},{"file":"/var/www/nextcloud/apps/circles/lib/Service/MemberService.php","line":271,"function":"newEvent","class":"OCA\Circles\Service\FederatedEventService","type":"->"},{"file":"/var/www/nextcloud/apps/circles/lib/Controller/LocalController.php","line":277,"function":"addMembers","class":"OCA\Circles\Service\MemberService","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":205,"function":"membersAdd","class":"OCA\Circles\Controller\LocalController","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":118,"function":"executeController","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":153,"function":"dispatch","class":"OC\AppFramework\Http\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":321,"function":"main","class":"OC\AppFramework\App","type":"::"},{"file":"/var/www/nextcloud/ocs/v1.php","line":61,"function":"match","class":"OC\Route\Router","type":"->"},{"file":"/var/www/nextcloud/ocs/v2.php","line":8,"args":["/var/www/nextcloud/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/nextcloud/apps/circles/lib/Db/CircleRequest.php","Line":412,"message":"{"event":""}","exception":"{"class":"OCA\Circles\Exceptions\FederatedUserNotFoundException","message":"singleId not found","code":404,"file":"/var/www/nextcloud/apps/circles/lib/Db/CircleRequest.php:412","trace":"#0 /var/www/nextcloud/apps/circles/lib/Service/FederatedUserService.php(849): OCA\Circles\Db\CircleRequest->getFederatedUserBySingleId()\n#1 /var/www/nextcloud/apps/circles/lib/Service/FederatedUserService.php(771): OCA\Circles\Service\FederatedUserService->getFederatedUser_SingleId()\n#2 /var/www/nextcloud/apps/circles/lib/FederatedItems/SingleMemberAdd.php(187): OCA\Circles\Service\FederatedUserService->getFederatedUser()\n#3 /var/www/nextcloud/apps/circles/lib/FederatedItems/MassiveMemberAdd.php(51): OCA\Circles\FederatedItems\SingleMemberAdd->generateMember()\n#4 /var/www/nextcloud/apps/circles/lib/Service/FederatedEventService.php(116): OCA\Circles\FederatedItems\MassiveMemberAdd->verify()\n#5 /var/www/nextcloud/apps/circles/lib/Service/MemberService.php(271): OCA\Circles\Service\FederatedEventService->newEvent()\n#6 /var/www/nextcloud/apps/circles/lib/Controller/LocalController.php(277): OCA\Circles\Service\MemberService->addMembers()\n#7 /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php(205): OCA\Circles\Controller\LocalController->membersAdd()\n#8 /var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php(118): OC\AppFramework\Http\Dispatcher->executeController()\n#9 /var/www/nextcloud/lib/private/AppFramework/App.php(153): OC\AppFramework\Http\Dispatcher->dispatch()\n#10 /var/www/nextcloud/lib/private/Route/Router.php(321): OC\AppFramework\App::main()\n#11 /var/www/nextcloud/ocs/v1.php(61): OC\Route\Router->match()\n#12 /var/www/nextcloud/ocs/v2.php(8): require_once('...')\n#13 {main}"}","CustomMessage":"{"event":""}"}}

Additional info

No browser console errors found. Testet with different browsers.