Add member

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

You can add users, organizational contacts, or other groups.


You can only add users to security and Office 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 and Directory.ReadWrite.All

HTTP request

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

Request headers

Header Value
Authorization Bearer {token}. Required.
Content-type application/json. Required.

Request body

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


If successful, this method returns a 204 No Content response code. It does not return anything in the response body.



The following is an example of the request.

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

  "": "{id}"


The following is an example of the response.

HTTP/1.1 204 No Content