# Android app fails to export/download large files while browser and desktop client succeed

**URL:** <https://help.nextcloud.com/t/android-app-fails-to-export-download-large-files-while-browser-and-desktop-client-succeed/246128>\
**Category:** 📱 Desktop & mobile clients\
**Tags:** desktop-client, android, nc33, webdav, bug\
**Created:** [June 22, 2026, 8:53am UTC](https://help.nextcloud.com/t/android-app-fails-to-export-download-large-files-while-browser-and-desktop-client-succeed/246128 "2026-06-22T08:53:48Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![przemhb](https://help.nextcloud.com/letter_avatar/przemhb/32/6_22734026db12803ebb3e059622ac3534.png) [@przemhb](https://help.nextcloud.com/u/przemhb)\
**Post date:** [June 22, 2026, 8:53am UTC](https://help.nextcloud.com/t/android-app-fails-to-export-download-large-files-while-browser-and-desktop-client-succeed/246128/1 "2026-06-22T08:53:49Z")

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## **Steps to reproduce**

1. Open the Nextcloud Android app.
2. Navigate to a large audio file stored in Nextcloud.
3. Try to export/download it to the Android device.

Example file:

- `dwojka_Wieczór płytowy_2026-05-31_22-00-00.aac`
- size: `434400337` bytes

## **Expected behavior**

The file should download/export completely to the Android device.

## **Actual behavior**

The app reports that export/download failed.

## **Logs**

Environment:

- Nextcloud server: `33.0.3.2`
- Android app user agent seen in logs: `Nextcloud-android/33.1.1`
- Server setup:
  - Nextcloud in Docker
  - Apache reverse proxy
  - file served from external local storage mount

Observed behavior:

- The same file downloads successfully:
  - in a browser on the same Android phone
  - in the Windows Nextcloud desktop client

- The server returns `200 OK` for the Android app request, but the transfer ends early.
- Forcing `HTTP/1.1` instead of `HTTP/2` did not fix the issue.

Relevant server log entries:

Android app, partial transfer:

- `2026-06-01 12:26:28 +0200`

- `2026-06-01 14:04:22 +0200`

Windows desktop client, full transfer:

- `2026-06-01 13:05:33 +0200`
  - same file
  - `HTTP/1.1`
  - `200`
  - `434400337` bytes

Other large files also ended early in the Android app around `~305-345 MB`, while smaller files succeeded.

Examples:

- `Nowa Tradycja/...2026-05-22...aac` → `329559198` bytes
- `Nowa Tradycja/...2026-05-23...aac` → `326500352` bytes
- `Nowa Tradycja/...2026-05-24...aac` → `333316096` bytes
- `Wieczór płytowy/...2026-05-24...aac` → repeated partial transfers around `305-345 MB`

Smaller files that succeeded from Android:

- about `58 MB`
- about `77-79 MB`
- about `113 MB`
- about `169 MB`
- about `290 MB`

Additional checks already done:

- file exists and is readable on the server
- file is present in Nextcloud file cache
- Android SD free space increased from about `3 GB` to about `10 GB`
- app excluded from battery optimization
- app granted broad file access

Conclusion:

- This does not appear to be a server-side storage, WebDAV, proxy, timeout, or file integrity issue.
- It looks like a client-side issue in the Android app’s large file download/export flow.

---

<div class="post-metadata">

**Author:** ![system](https://help.nextcloud.com/user_avatar/help.nextcloud.com/system/32/29333_2.png) [@system](https://help.nextcloud.com/u/system)\
**Post date:** [September 20, 2026, 8:54am UTC](https://help.nextcloud.com/t/android-app-fails-to-export-download-large-files-while-browser-and-desktop-client-succeed/246128/2 "2026-09-20T08:54:22Z")

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