Delete attachment

Delete an attachment from a calendar event, mail message, or group post.


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

  • If accessing attachments in messages: Mail.ReadWrite.
  • If accessing attachments in events: Calendars.ReadWrite.
  • If accessing attachments in group posts: Group.ReadWrite.All.

HTTP request

Attachments for an event in the user's or group's default calendar.

DELETE /me/events/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/events/{id}/attachments/{id}

DELETE /me/calendar/{id}/events/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/calendar/events/{id}/attachments/{id}

Attachments for an event in a calendar belonging to the user's default calendarGroup.

DELETE /me/calendars/{id}/events/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/calendars/{id}/events/{id}/attachments/{id}

DELETE /me/calendargroup/calendars/{id}/events/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/calendargroup/calendars/{id}/events/{id}/attachments/{id}

Attachments for an event in a calendar belonging to a user's calendarGroup.

DELETE /me/calendargroups/{id}/calendars/{id}/events/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/calendargroups/{id}/calendars/{id}/events/{id}/attachments/{id}

Attachments for a message in a user's mailbox.

DELETE /me/messages/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/messages/{id}/attachments/{id}

Attachments for a message contained in a top level mailFolder in a user's mailbox.

DELETE /me/mailFolders/{id}/messages/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/mailFolders/{id}/messages/{id}/attachments/{id}

Attachments for a message contained in a child folder of a mailFolder in a user's mailbox. The example below shows one level of nesting, but a message can be located in a child of a child and so on.

DELETE /me/mailFolders/{id}/childFolders/{id}/.../messages/{id}/attachments/{id}
DELETE /users/{id | userPrincipalName}/mailFolders/{id}/childFolders/{id}/messages/{id}/attachments/{id}

Attachments for a post in a thread belonging to a conversation of a group.

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

Request headers

Name Type Description
Authorization string Bearer {token}. Required.

Request body

Do not supply a request body for this method.


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



Here is an example of the request to delete an attachment on an event.


Here is an example of the response.

HTTP/1.1 204 No Content

SDK sample code

GraphServiceClient graphClient = new GraphServiceClient( authProvider );

await graphClient.Me.Events["{id}"].Attachments["{id}"]

Read the SDK documentation for details on how to add the SDK to your project and create an authProvider instance.