---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/53408#article
headline: "53408: ICE connection restart was attempted, but it is not allowed"
url: https://www.twilio.com/docs/api/errors/53408
inLanguage: en
dateModified: 2026-03-11T20:43:38.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 53408: ICE connection restart was attempted, but it is not allowed

Log Type: TWILIO

Log Level: ERROR

## Description

ICE restarts are only allowed on SDP offers, not answers

### Possible causes

* The client has attempted an ICE restart in a SDP answer.

### Possible solutions

* Ensure that the ICE restart happens only in SDP offers.