List attachments

Retrieve a list of attachment objects attached to a post.


One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Permissions.

Permission type Permissions (from least to most privileged)
Delegated (work or school account) Group.Read.All, Group.ReadWrite.All
Delegated (personal Microsoft account) Not supported.
Application Group.Read.All, Group.ReadWrite.All

HTTP request

Get the attachments for a post in a conversationThread of a group. Specifying the parent conversation is optional.

GET /groups/{id}/threads/{id}/posts/{id}/attachments
GET /groups/{id}/conversations/{id}/threads/{id}/posts/{id}/attachments

Optional query parameters

This method supports the OData Query Parameters to help customize the response.

In particular, you can use the $expand query parameter to include all of the post attachments inline with the rest of the post properties. For example:


Request headers

Header Value
Authorization Bearer {token}. Required.

Request body

Do not supply a request body for this method.


If successful, this method returns a 200 OK response code and collection of attachment objects in the response body.



Here is an example of the request.


Here is an example of the response. Note: The response object shown here may be truncated for brevity. All of the properties will be returned from an actual call.

HTTP/1.1 200 OK
Content-type: application/json

    "@odata.context": "$metadata#groups('1848753d-185d-4c08-a4e4-6ee40521d115')/threads('AAQkADJfolA%3D%3D')/posts('AAMkADJ-aHAAA%3D')/attachments",
    "value": [
            "@odata.type": "#microsoft.graph.fileAttachment",
            "id": "AAMkADJ-aHAAABEgAQAO5ZYuLGBmNFnelXXQqAN6I=",
            "lastModifiedDateTime": "2019-08-23T01:53:41Z",
            "name": "FileAsAttachment.txt",
            "contentType": "text/plain",
            "size": 244,
            "isInline": false,
            "contentId": null,
            "contentLocation": null,
            "contentBytes": "VGhpcyBpcyBhIGZpbGUgdG8gYmUgYXR0YWNoZWQu"