---
title: "Updates a thread's properties."
method: PATCH
path: "/chat/threads/{chatThreadId}"
tags: ["Threads"]
---

# Updates a thread's properties.

`PATCH /chat/threads/{chatThreadId}`

## Path parameters

- `chatThreadId` string, required

## Query parameters

- `api-version` string, required

## Response `204`

Thread was successfully updated.

## Other responses

- `401` — Unauthorized.
- `403` — Forbidden.
- `429` — Too many requests.
- `503` — Service unavailable.

## Changes

> 19 revisions in range; 2 could not be searched.

- **2026-07-13** `e3e45a46545e` — 1 breaking, 2 info
  - removed the success response with the status `200`
  - api operation id `UpdateChatThread` removed and replaced with `ChatThread_UpdateChatThread`
  - added the success response with the status `204`
- **2026-07-13** `b7245afee432` — 1 info
  - api operation id `ChatThread_UpdateChatThread` removed and replaced with `ChatThread_UpdateChatThreadProperties`

[Change history](https://skmtc.dev/azure/apis/communication-chat/changes/chat/threads/:chatThreadId/patch.md)

---

[API](https://skmtc.dev/azure/apis/communication-chat.md) · [All operations](https://skmtc.dev/azure/apis/communication-chat/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/azure/communication-chat/revisions/57a59d1b8530/schema)