Calendar events are auto-canceled for invited attendees

balli1187 commented 1 year ago

⚠️ This issue respects the following points: ⚠️

[X] This is a bug, not a question or a configuration/webserver/proxy issue.
[X] This issue is not already reported on Github (I've searched it).
[X] Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
[X] Nextcloud Server is running on 64bit capable CPU, PHP and OS.
[X] I agree to follow Nextcloud's Code of Conduct.

Bug description

When inviting someone to an appointment the event will be canceld by email notification after some time without any noteable reason. Its only canceld for attendees i invited but stays as scheduled in my calender. I don't know what could be the trigger. I'm using the calender on my iPhone and also with CalDavSynchronizer and outlook.

Steps to reproduce

create an event and invite someone
invitation gets accepted
wait some time for the cancelation mail sent to the invited attendees

Expected behavior

no auto-cancelation

Installation method

Community Docker image

Operating system

Other

PHP engine version

PHP 8.0

Web server

No response

Database engine version

MariaDB

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

No response

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

[X] Default user-backend (database)
[ ] LDAP/ Active Directory
[ ] SSO - SAML
[ ] Other

Configuration report

{
    "htaccess.RewriteBase": "\/",
    "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
        }
    ],
    "instanceid": "***REMOVED SENSITIVE VALUE***",
    "passwordsalt": "***REMOVED SENSITIVE VALUE***",
    "secret": "***REMOVED SENSITIVE VALUE***",
    "trusted_domains": [
        "my-domain",
        "my-host-ip",
        "my-hostname",
        "my-docker-ip"
    ],
    "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
    "overwrite.cli.url": "https:\/\/my-domain",
    "overwritehost": "my-domain",
    "overwriteprotocol": "https",
    "overwritewebroot": "\/nxtcld",
    "datadirectory": "***REMOVED SENSITIVE VALUE***",
    "dbtype": "mysql",
    "version": "24.0.6.1",
    "dbname": "***REMOVED SENSITIVE VALUE***",
    "dbhost": "***REMOVED SENSITIVE VALUE***",
    "dbport": "",
    "dbtableprefix": "",
    "mysql.utf8mb4": true,
    "dbuser": "***REMOVED SENSITIVE VALUE***",
    "dbpassword": "***REMOVED SENSITIVE VALUE***",
    "installed": true,
    "mail_smtpmode": "smtp",
    "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***",
    "mail_smtpauthtype": "LOGIN",
    "twofactor_enforced": "false",
    "twofactor_enforced_groups": [],
    "twofactor_enforced_excluded_groups": [],
    "maintenance": false,
    "log_type": "file",
    "logtimezone": "Europe\/Berlin",
    "logfile": "\/var\/log\/nextcloud.log",
    "loglevel": 0,
    "app_install_overwrite": [
        "calendar",
        "occweb",
        "keeweb",
        "files_reader",
        "documentserver_community",
        "sharerenamer"
    ],
    "theme": "",
    "mail_smtpsecure": "ssl",
    "updater.release.channel": "stable",
    "invitation_link_recipients": "yes",
    "default_phone_region": "DE",
    "data-fingerprint": "f31178f90b7c321b37aef44b60f47c29",
    "remember_login_cookie_lifetime": 1296000,
    "session_lifetime": 900,
    "session_keepalive": true,
    "auto_logout": true
}

List of activated Apps

Enabled:
 - accessibility: 1.10.0
 - activity: 2.16.0
 - apporder: 0.15.0
 - calendar: 3.5.1
 - cloud_federation_api: 1.7.0
 - comments: 1.14.0
 - contacts: 4.2.2
 - dav: 1.22.0
 - documentserver_community: 0.1.12
 - event_update_notification: 2.0.0
 - external: 4.0.0
 - federatedfilesharing: 1.14.0
 - federation: 1.14.0
 - files: 1.19.0
 - files_external: 1.16.1
 - files_pdfviewer: 2.5.0
 - files_rightclick: 1.3.0
 - files_sharing: 1.16.2
 - files_trashbin: 1.14.0
 - files_versions: 1.17.0
 - files_videoplayer: 1.13.0
 - keeweb: 0.6.9
 - logreader: 2.9.0
 - lookup_server_connector: 1.12.0
 - mail: 1.14.1
 - nextcloud_announcements: 1.13.0
 - notes: 4.5.1
 - notifications: 2.12.1
 - oauth2: 1.12.0
 - occweb: 0.1.0
 - onlyoffice: 7.5.6
 - photos: 1.6.0
 - privacy: 1.8.0
 - provisioning_api: 1.14.0
 - settings: 1.6.0
 - support: 1.7.0
 - tasks: 0.14.5
 - text: 3.5.1
 - theming: 1.15.0
 - twofactor_backupcodes: 1.13.0
 - twofactor_nextcloud_notification: 3.4.0
 - twofactor_totp: 6.4.1
 - updatenotification: 1.14.0
 - viewer: 1.8.0
 - workflowengine: 2.6.0
Disabled:
 - admin_audit
 - circles: 22.2.0
 - contactsinteraction: 1.5.0
 - dashboard: 6.0.0
 - encryption
 - firstrunwizard: 2.13.0
 - integration_google: 1.0.8
 - password_policy: 1.14.0
 - recommendations: 0.4.0
 - serverinfo: 1.14.0
 - sharebymail: 1.12.0
 - survey_client: 1.12.0
 - systemtags: 1.14.0
 - user_ldap
 - user_status: 1.0.1
 - weather_status: 1.2.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

download the log from admin panel but it has 80mb and site crashes when i try to copy it here

Additional info

docker is running on QNAP NAS

szaimen commented 1 year ago

Hi, please update to 25.0.7 or better 26.0.2 and report back if it fixes the issue. Thank you!

My goal is to add a label like e.g. 26-feedback to this ticket of an up-to-date major Nextcloud version where the bug could be reproduced. However this is not going to work without your help. So thanks for all your effort!

If you don't manage to reproduce the issue in time and the issue gets closed but you can reproduce the issue afterwards, feel free to create a new bug report with up-to-date information by following this link: https://github.com/nextcloud/server/issues/new?assignees=&labels=bug%2C0.+Needs+triage&template=BUG_REPORT.yml&title=%5BBug%5D%3A+

reos-rcrozier commented 1 year ago

I see this in 26.0.3, see my report linked above (which I submitted before I found this issue).

sitcsitc commented 1 year ago

This bug has been plaguing us and causing mayhem. Seems to apply to events that have many participants (10-20). I am gathering information on a canceled appointment this morning. I have 2 people sharing 1 account (because of the calendar sharing bug that doesn't allow them to send email invites unless they are owner of calendar, uggg). User 1 is using Outlook plugin caldavsynchronizer and web gui. User 2 is macos (dav) and ios (dav) and web. I see in the "activity" app in NC that the shared user updated the event at 9:17 this morning. At 9:17 an email was sent to all participants that the event was canceled (I verified this from exim logs). Needless to say, the calendar event was not canceled.

This is the only PUT in that 60 second window (apache log): 76.127.55.146 - office [26/Jul/2023:09:17:49 -0600] "REPORT /remote.php/dav/calendars/office/shared/ HTTP/1.1" 207 17147 "-" "CalDavSynchronizer/4.4" 76.127.55.146 - office [26/Jul/2023:09:17:49 -0600] "PUT /remote.php/dav/calendars/office/shared/A1F336F3-2DB6-464F-BB85-42461E374715.ics HTTP/1.1" 204 685 "-" "CalDavSynchronizer/4.4" 76.127.55.146 - office [26/Jul/2023:09:17:49 -0600] "PUT /remote.php/dav/calendars/office/shared/F747180F-94FA-416E-9484-10AEBF9D8E04.ics HTTP/1.1" 204 598 "-" "CalDavSynchronizer/4.4" 76.127.55.146 - office [26/Jul/2023:09:17:52 -0600] "GET /remote.php/dav/calendars/office/shared/F747180F-94FA-416E-9484-10AEBF9D8E04.ics HTTP/1.1" 200 4241 "-" "CalDavSynchronizer/4.4"

I will disable this plugin and report back if problem goes away. Please let me know if you want anything from me. I have full access to server and can make any changes you recommend.

reos-rcrozier commented 1 year ago

I want to add that I am NOT using CalDavSynchronizer, and for me it happens for any number of participents. In fact, for this reason, and issues with Talk we've essentially decided to stop using the calendar altogether and use another solution.

It would be good to stop adding new features like AI and focus instead on fixing critical core stuff like this.

sitcsitc commented 1 year ago

Just reporting back. After disabling the caldavsynchronizer from outlook we haven't had anymore mystery cancelled events. Anyone have a clue about whats going wrong here? This is a real show stopper.

tofublock commented 9 months ago

Is anyone experiencing the problem using the Calendar backup feature in the Android app? It went away for me after I disabled that.

nextcloud / server