---
type: source
title: FAQ - Nextcloud (and OnlyOffice)
created: 2026-07-01
updated: 2026-07-01
tags: [faq, nextcloud, onlyoffice, troubleshooting]
related: [nextcloud, onlyoffice, cloud-data-migration]
sources: ["output/rz_uni_greifswald_de_dienste_webdienste_nextcloud_faq_nextcloud.md"]
---

# FAQ - Nextcloud (and OnlyOffice)

This source provides a comprehensive set of frequently asked questions and technical workarounds/troubleshooting steps for the Nextcloud and OnlyOffice services provided by the URZ at Universität Greifswald.

## Key Troubleshooting Areas

### Browser and Cache Issues
Many display problems, including files or folders suddenly disappearing or documents failing to load completely, are attributed to local browser cache. Recommended solutions include:
- Using Incognito/Private mode.
- Restarting the browser.
- Hard refreshing the page using `CTRL+F5` or `CTRL+R`.

### OnlyOffice Loading Issues
When OnlyOffice documents fail to load completely, users can disable the network cache via Browser Developer Tools:
1. Press `F12` (or `Ctrl+Shift+I`).
2. Navigate to the **Network** tab.
3. Check the **Disable cache** box.
4. Reload the page (`Ctrl+R`).

### PDF Viewer Bug
A known bug in the Nextcloud PDF viewer causes "Missing File" errors when filenames or parent folders contain non-web-conform characters.
- **Problematic characters:** Spaces, special characters, and umlauts.
- **Technical cause:** These characters are Unicode-encoded (appearing as `%25XXX` in the URL), which prevents the server from locating the file.
- **Recommended solutions:** 
    - Use web-compliant naming conventions for files and folders.
    - Download the file directly via the menu.

## Functional Guidance

### Account Search Limitations
The internal search for sharing accounts is restrictive and does not support partial string matches by default. It only supports:
- Full names (First Last)
- Primary email addresses (as defined in the [[ums]])
- Last names

Partial string searches are only possible using the `*` wildcard (e.g., `*mensch`).

### Direct Downloads and Automation
- **Direct Download Links:** Users can bypass the Nextcloud web interface by appending `/download` to a standard share link.
- **CLI Uploads via WebDAV:** Files can be uploaded to a public share folder using `curl` without the web interface via the endpoint `https://nextcloud.uni-greifswald.de/public.php/webdav/`.
    - **Authentication:** This requires the end of the share link (token) as the username and the password (if applicable).
    - **Command structure:** `curl -u "SHARE_TOKEN:PASSWORD" -T "FILE_PATH" -H 'X-Requested-With: XMLHttpRequest' https://nextcloud.uni-greifswald.de/public.php/webdav/`
    - **Note:** If no password is used, a colon must still follow the token (e.g., `"TOKEN:"`).

## Data Migration
Migrating data from other central storage (e.g., the [[groupware]] file module) to Nextcloud requires a local intermediary computer. Two methods are provided:
1. **WebDAV Migration**: Connecting to both services via WebDAV and copying files between directories.
2. **Archive Migration**: Downloading folders from the source as ZIP archives, extracting them locally, and uploading them to Nextcloud.