[Bug]: Calendar: Rescheduling of meetings invited from Outlook not working

[beyertom]

⚠️ 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

I am experiencing an issue where updates to meetings sent from Outlook to Nextcloud do not reflect in the Nextcloud calendar entry

Steps to reproduce

1. Create a meeting in an external Outlook/Exchange account and invite a Nextcloud email address (e.g., Sunday at 13:00).
2. Accept the meeting in Nextcloud via the Mail App by clicking the “Accept” button.
3. A message appears in the Mail App stating, “You accepted this invitation.”
4. The meeting is successfully scheduled for Sunday at 13:00 in the Nextcloud Calendar App.
5. Update the meeting time in the external Outlook/Exchange account to, for example, Saturday at 14:00.
6. An email arrives in the Nextcloud Mail App, but it does not provide an “Accept Invite” button. Instead, it immediately states, “You accepted this invitation.”
7. The meeting remains scheduled for Sunday at 13:00 in the Nextcloud Calendar App.

Expected behavior

At step 6, the email should indicate that this is an update to an existing meeting. You will have two options:

Accept: This will update the meeting in your calendar to Saturday at 13:00.
Decline: This will delete the meeting from your calendar.

Nextcloud Server version

30

Operating system

Other

PHP engine version

PHP 8.3

Web server

Nginx

Database engine version

PostgreSQL

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": "\/nix\/store\/1rpzv4bkyym74wj5pkbf0say7kjgbndq-nextcloud-30.0.0-with-apps\/apps",
                "url": "\/apps",
                "writable": false
            },
            {
                "path": "\/nix\/store\/1rpzv4bkyym74wj5pkbf0say7kjgbndq-nextcloud-30.0.0-with-apps\/nix-apps",
                "url": "\/nix-apps",
                "writable": false
            },
            {
                "path": "\/nix\/store\/1rpzv4bkyym74wj5pkbf0say7kjgbndq-nextcloud-30.0.0-with-apps\/store-apps",
                "url": "\/store-apps",
                "writable": true
            }
        ],
        "appstoreenabled": false,
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "skeletondirectory": "",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "log_type": "syslog",
        "loglevel": 2,
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "pgsql",
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "profile.enabled": false,
        "default_phone_region": "DE",
        "maintenance_window_start": 1,
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": 0
        },
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "version": "30.0.0.14",
        "overwrite.cli.url": "http:\/\/localhost",
        "dbport": "",
        "dbtableprefix": "oc_",
        "installed": true,
        "mail_smtpmode": "smtp",
        "mail_smtpsecure": "ssl",
        "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***",
        "overwriteprotocol": "https",
        "maintenance": false,
        "trusted_domains": [
            "***REMOVED SENSITIVE VALUE***"
        ]
    }
}

List of activated Apps

Enabled:
  - activity: 3.0.0
  - bruteforcesettings: 3.0.0
  - calendar: 5.0.0
  - cloud_federation_api: 1.13.0
  - comments: 1.20.1
  - contacts: 6.1.0
  - contactsinteraction: 1.11.0
  - dashboard: 7.10.0
  - dav: 1.31.1
  - federatedfilesharing: 1.20.0
  - files: 2.2.0
  - files_downloadlimit: 3.0.0
  - files_pdfviewer: 3.0.0
  - files_reminders: 1.3.0
  - files_sharing: 1.22.0
  - files_trashbin: 1.20.1
  - files_versions: 1.23.0
  - firstrunwizard: 3.0.0
  - lookup_server_connector: 1.18.0
  - mail: 4.0.1
  - nextcloud_announcements: 2.0.0
  - notifications: 3.0.0
  - oauth2: 1.18.1
  - password_policy: 2.0.0
  - privacy: 2.0.0
  - provisioning_api: 1.20.0
  - recommendations: 3.0.0
  - related_resources: 1.5.0
  - serverinfo: 2.0.0
  - settings: 1.13.0
  - sharebymail: 1.20.0
  - support: 2.0.0
  - systemtags: 1.20.0
  - text: 4.1.0
  - theming: 2.5.0
  - twofactor_backupcodes: 1.19.0
  - updatenotification: 1.20.0
  - user_status: 1.10.0
  - viewer: 3.0.0
  - weather_status: 1.10.0
  - webhook_listeners: 1.1.0-dev
  - workflowengine: 2.12.0
Disabled:
  - admin_audit: 1.20.0
  - circles: 30.0.0-dev (installed 28.0.0-dev)
  - encryption: 2.18.0
  - federation: 1.20.0 (installed 1.18.0)
  - files_external: 1.22.0
  - logreader: 3.0.0 (installed 2.13.0)
  - photos: 3.0.2 (installed 2.4.0)
  - survey_client: 2.0.0 (installed 1.16.0)
  - suspicious_login: 8.0.0
  - twofactor_nextcloud_notification: 4.0.0
  - twofactor_totp: 12.0.0-dev
  - user_ldap: 1.21.0

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

No response

Additional info

I posted this topic also to the community forum, but i think its a bug, therefore here is the better place: https://help.nextcloud.com/t/calendar-rescheduling-of-meetings-invited-from-outlook-not-working/206850

[kesselb]

cc @miaulalala @st3iny @SebastianKrupinski

[kesselb]

Thanks for your report 👍

Your case sounds like nextcloud/mail#8458.

This should be resolved by #47826 and nextcloud/mail#10116 with one of the upcoming releases of Nextcloud then.

[beyertom]

Thank you very for the quick response. As its already covered by the other tickets, should I close this one?