Add member

Namespace: microsoft.graph


APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported. To determine whether an API is available in v1.0, use the Version selector.

Add a member to a Microsoft 365 group or security group through the members navigation property.

You can add users, service principals or other groups.


You can only add users to security and Microsoft 365 groups managed through the cloud.


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) GroupMember.ReadWrite.All, Group.ReadWrite.All, Directory.ReadWrite.All, Directory.AccessAsUser.All
Delegated (personal Microsoft account) Not supported.
Application GroupMember.ReadWrite.All, Group.ReadWrite.All, Directory.ReadWrite.All

HTTP request

POST /groups/{group-id}/members/$ref

Request headers

Name Description
Authorization Bearer {token}. Required.

Request body

In the request body, supply a JSON representation of a directoryObject, user or group object to be added.


If successful, this method returns a 204 No Content response code. It does not return anything in the response body. This method returns a 400 Bad Request response code when the object is already a member of the group. This method returns a 404 Not Found response code when the object being added doesn't exist.



The following is an example of the request.

Content-type: application/json
Content-length: 30

  "": "{id}"

In the request body, supply a JSON representation of the id of the directoryObject, user, or group object you want to add.


The following is an example of the response.

Note: The response object shown here might be shortened for readability. All the properties will be returned from an actual call.

HTTP/1.1 204 No Content