Support intro
Das aktuelle Winter 26 zeigt in der E-mail APP keine PDFs mehr an.
current file cannot be previewed online. Download it or convert it to a supported format.
Supports online preview for Office, PDF, OFD, Typst, archives, email, OLB/DRA, CAD, geospatial data, 3D models, Excalidraw, draw.io , EPUB, UMD, Markdown, code/text, images, audio/video, fonts, and structured data assets.
Hat bisher funktioniert. Nun kommt nur noch diese nichtssagende Meldung. Passiert das auch bei den bezahlten Versionen?
tflidd
September 7, 2026, 11:45am
2
Du hast auch die PDF viewer app?
Ja. Sie funktioniert im Bereich Dateien. Nur im Bereich E-Mail geht sie seit dem letzen Update von Nextcloud nicht mehr.
tflidd
September 8, 2026, 7:21am
4
Dieser Fehler mit der FileID?
opened 05:43PM - 07 Jul 26 UTC
bug
1. to develop
### Steps to reproduce
1. Open a eMail
2. Click on PDF Attachment
### Expect… ed behavior
PDF attachment is opening.
### Actual behavior
<img width="1941" height="301" alt="Image" src="https://github.com/user-attachments/assets/080fcb50-0f53-4c96-b5e1-7c0ec58f4f3f" />
### Mail app version
5.10.7
### Nextcloud version
Latest
### Mailserver or service
Postfix/Dovecot
### Operating system
Debian 13
### PHP engine version
Other
### Nextcloud memory caching
_No response_
### Web server
Apache (supported)
### Database
MariaDB
### Additional info
EuroOffice is installed and working. I can also open PDF files. Based on the log file, I suspect that EuroOffice is being called to display the PDF.
**Reverse Proxy Log**
`/apps/eurooffice/%7BfileId%7D?filePath=https%3A%2F%2Fxxx.com%2Fapps%2Fmail%2Fapi%2Fmessages%2F1689644%2Fattachment%2F2&inframe=true&inviewer=true,like Gecko) Chrome/150.0.0.0 Safari/537.36,-
/apps/eurooffice/%7BfileId%7D?filePath=https%3A%2F%2Fxxx.com%2Fapps%2Fmail%2Fapi%2Fmessages%2F1689644%2Fattachment%2F2&inframe=true&inviewer=true,like Gecko) Chrome/150.0.0.0 Safari/537.36,-
/ocs/v2.php/apps/eurooffice/api/v1/config/0?filePath=https%3A%2F%2Fxxx.com%2Fapps%2Fmail%2Fapi%2Fmessages%2F1689644%2Fattachment%2F2&inframe=true&inviewer=true,like Gecko) Chrome/150.0.0.0 Safari/537.36,-
/ocs/v2.php/apps/eurooffice/api/v1/config/0?filePath=https%3A%2F%2Fxxx.com%2Fapps%2Fmail%2Fapi%2Fmessages%2F1689644%2Fattachment%2F2&inframe=true&inviewer=true,like Gecko) Chrome/150.0.0.0 Safari/537.36,-
/index.php/apps/files/preview-service-worker.js,like Gecko) Chrome/150.0.0.0 Safari/537.36,-
`
**nextcloud.log**
`
{
"reqId": "31Mok1YIeVa0tHIbl7oJ",
"level": 1,
"time": "2026-07-08T11:13:28+02:00",
"remoteAddr": "1.2.3.4",
"user": "user@example.com",
"app": "no app in context",
"method": "GET",
"url": "/apps/eurooffice/%7BfileId%7D?filePath=https%3A%2F%2Fxxx.com%2Fapps%2Fmail%2Fapi%2Fmessages%2F1691430%2Fattachment%2F2&inframe=true&inviewer=true",
"scriptName": "/index.php",
"message": "The app config key dav/hide_absence_settings is not defined in the config lexicon",
"userAgent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36",
"version": "34.0.1.2",
"data": []
}
{
"reqId": "qJC3e5SzAbYCx2n8EIE0",
"level": 3,
"time": "2026-07-08T11:13:29+02:00",
"remoteAddr": "1.2.3.4",
"user": "user@example.com",
"app": "eurooffice",
"method": "GET",
"url": "/ocs/v2.php/apps/eurooffice/api/v1/config/0?filePath=https%3A%2F%2Fxxx.com%2Fapps%2Fmail%2Fapi%2Fmessages%2F1691430%2Fattachment%2F2&inframe=true&inviewer=true",
"scriptName": "/ocs/v2.php",
"message": "Config: 0 Datei-ID ist leer",
"userAgent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36",
"version": "34.0.1.2",
"data": {
"app": "eurooffice"
}
}
`
Falls nicht, schau einfach im Bug Tracker, ob es ein anderer Report gut beschreibt und wenn nicht, dann mach dort einfach einen neuen Report auf.
Starmanager:
current file cannot be previewed online. Download it or convert it to a supported format.
Supports online preview for Office, PDF, OFD, Typst, archives, email, OLB/DRA, CAD, geospatial data, 3D models, Excalidraw, draw.io , EPUB, UMD, Markdown, code/text, images, audio/video, fonts, and structured data assets.
Wie oben beschrieben habe ich diese Meldung
current file cannot be previewed online. Download it or convert it to a supported format.
Supports online preview for Office, PDF, OFD, Typst, archives, email, OLB/DRA, CAD, geospatial data, 3D models, Excalidraw, draw.io , EPUB, UMD, Markdown, code/text, images, audio/video, fonts, and structured data assets.
Aber nur in der E-mail APP im Nextcloud Web
Leider hast Du das beim verfassen des Startbeitrags eingeblendete Support Template weitgehend ignoriert.