---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/17552#article
headline: "17552: Failed to download media file: not found"
url: https://www.twilio.com/docs/api/errors/17552
inLanguage: en
dateModified: 2026-09-17T18:23:40.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 17552: Failed to download media file: not found

Log Type: APPLICATION

Log Level: ERROR

## Description

Twilio could not transcribe the audio because the media URL returned an HTTP 404 status code. The transcription is marked as `failed`.

### Possible causes

* The file was deleted before Twilio tried to download it.
* The media URL is incorrect.
* A pre-signed URL expired before the download started.

### Possible solutions

* Confirm that the media file exists at the specified URL and is reachable by Twilio.
* If you use a pre-signed URL, regenerate it with a longer validity period and resubmit the transcription request.

### Additional resources

* [Transcribe an external recording](/docs/voice/api/batch-transcription-resource#transcribe-an-external-recording)