title	chat: markChatUnreadForUser
description	Mark a chat as unread for a user.
author	sweta-thapliyal
ms.localizationpriority	medium
ms.subservice	teams
doc_type	apiPageType
ms.date	04/05/2024

chat: markChatUnreadForUser

Namespace: microsoft.graph

[!INCLUDE beta-disclaimer]

Mark a chat as unread for a user.

[!INCLUDE national-cloud-support]

Permissions

Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

[!INCLUDE permissions-table]

HTTP request

POST /chats/{chat-id}/markChatUnreadForUser

Request headers

Name	Description
Authorization	Bearer {token}. Required. Learn more about authentication and authorization.
Content-Type	application/json. Required.

Request body

In the request body, supply a JSON representation of the parameters.

The following table shows the parameters that can be used with this action.

Parameter	Type	Description
lastMessageReadDateTime	DateTimeOffset	Timestamp that indicates the time after which all sent or received messages are to be marked as unread.
user	teamworkUserIdentity	User to unread the chat for.

Note: lastMessageReadDateTime is optional in the request. If not mentioned, the last message would be marked as unread.

Response

If successful, this action returns a 204 No Content response code.

Examples

Request

HTTP

POST https://graph.microsoft.com/beta/chats/19:7d898072-792c-4006-bb10-5ca9f2590649_8ea0e38b-efb3-4757-924a-5f94061cf8c2@unq.gbl.spaces/markChatUnreadForUser
Content-Type: application/json
Content-length: 158

{
  "user": {
    "id" : "d864e79f-a516-4d0f-9fee-0eeb4d61fdc2",
    "tenantId": "2a690434-97d9-4eed-83a6-f5f13600199a"
  },
  "lastMessageReadDateTime": "2021-05-27T22:13:01.577Z"
}