Update event

Namespace: microsoft.graph

Update the properties of the event object.

This API is available in the following national cloud deployments.

Global service	US Government L4	US Government L5 (DOD)	China operated by 21Vianet
✅	✅	✅	✅

Notes for updating specific properties

Note the following behaviors or recommendations when updating the corresponding properties:

• attendees property and meeting updates

  • An event update that includes only the attendees property in the request body sends a meeting update to only the attendees that have changed.
  • An event update that removes an attendee specified as a member of a distribution list sends a meeting update to all the attendees.

• body property and online meetings

  Before updating the body of an event that has been set up as an online meeting, be sure to first get the body property, apply the appropriate changes to the content, and preserve the meeting blob for online meeting. Inadvertently removing the meeting blob from the body would disable meeting online.

• end and start properties and their time zones

  When updating the time zone of the start or end time of an event, first find the supported time zones to make sure you set only time zones that have been configured for the user's mailbox server.

Permissions

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)	Calendars.ReadWrite
Delegated (personal Microsoft account)	Calendars.ReadWrite
Application	Calendars.ReadWrite

HTTP request

PATCH /me/events/{id}
PATCH /users/{id | userPrincipalName}/events/{id}
PATCH /groups/{id}/events/{id}

PATCH /me/calendar/events/{id}
PATCH /users/{id | userPrincipalName}/calendar/events/{id}
PATCH /groups/{id}/calendar/events/{id}

PATCH /me/calendars/{id}/events/{id}
PATCH /users/{id | userPrincipalName}/calendars/{id}/events/{id}

PATCH /me/calendarGroups/{id}/calendars/{id}/events/{id}
PATCH /users/{id | userPrincipalName}/calendarGroups/{id}/calendars/{id}/events/{id}

Request headers

Name	Type	Description
Authorization	string	Bearer {token}. Required. Learn more about authentication and authorization.

Request body

In the request body, supply only the values for properties to update. Existing properties that aren't included in the request body maintain their previous values or are recalculated based on changes to other property values.

The following table specifies the properties that can be updated.

Property	Type	Description
attendees	Attendee	The collection of attendees for the event.
body	ItemBody	The body of the message associated with the event.
categories	String collection	The categories associated with the event.
end	DateTimeTimeZone	The date, time, and time zone that the event ends.
hideAttendees	Boolean	When set to true, each attendee only sees themselves in the meeting request and meeting Tracking list. Default is false.
importance	String	The importance of the event. The possible values are: low, normal, high.
isAllDay	Boolean	Set to true if the event lasts all day.
isOnlineMeeting	Boolean	True if this event has online meeting information, false otherwise. Default is false. Optional.
isReminderOn	Boolean	Set to true if an alert is set to remind the user of the event.
location	Location	The location of the event.
locations	location collection	The locations where the event is held or attended from. The location and locations properties always correspond with each other. If you update the location property, any prior locations in the locations collection would be removed and replaced by the new location value.
onlineMeetingProvider	onlineMeetingProviderType	Represents the online meeting service provider. The possible values are teamsForBusiness, skypeForBusiness, and skypeForConsumer. Optional.
recurrence	PatternedRecurrence	The recurrence pattern for the event.
reminderMinutesBeforeStart	Int32	The number of minutes before the event start time that the reminder alert occurs.
responseRequested	Boolean	Set to true if the sender would like a response when the event is accepted or declined.
sensitivity	String	The possible values are: normal, personal, private, confidential.
showAs	String	The status to show. The possible values are: free, tentative, busy, oof, workingElsewhere, unknown.
start	DateTimeTimeZone	The start date, time, and time zone of the event.
subject	String	The text of the event's subject line.

Because the event resource supports extensions, you can use the PATCH operation to add, update, or delete your own app-specific data in custom properties of an extension in an existing event instance.

If the event you're updating is the master event of a recurring series, contains multiple attendees, and has instances that have been updated separately, multiple notification emails will be sent out: one for the master series and one per instance that has been updated.

Response

If successful, this method returns a 200 OK response code and updated event object in the response body.

Note: This method can return an HTTP 400 Bad Request response with an error code of ErrorOccurrenceCrossingBoundary and the following error message: Modified occurrence is crossing or overlapping adjacent occurrence. This indicates that the update violates the following Outlook restriction on recurrence exceptions: an occurrence cannot be moved to or before the day of the previous occurrence, and cannot be moved to or after the day of the following occurrence.

Example

Request

The following example shows a request.

HTTP

PATCH https://graph.microsoft.com/v1.0/me/events/{id}
Content-type: application/json

{
  "originalStartTimeZone": "originalStartTimeZone-value",
  "originalEndTimeZone": "originalEndTimeZone-value",
  "responseStatus": {
    "response": "",
    "time": "datetime-value"
  },
  "recurrence": null,
  "reminderMinutesBeforeStart": 99,
  "isOnlineMeeting": true,
  "onlineMeetingProvider": "teamsForBusiness",
  "isReminderOn": true,
  "hideAttendees": false,
  "categories": ["Red category"]
}

C#

// Code snippets are only available for the latest version. Current version is 5.x

// Dependencies
using Microsoft.Graph.Models;

var requestBody = new Event
{
	OriginalStartTimeZone = "originalStartTimeZone-value",
	OriginalEndTimeZone = "originalEndTimeZone-value",
	ResponseStatus = new ResponseStatus
	{
		Response = ResponseType.None,
		Time = DateTimeOffset.Parse("datetime-value"),
	},
	Recurrence = null,
	ReminderMinutesBeforeStart = 99,
	IsOnlineMeeting = true,
	OnlineMeetingProvider = OnlineMeetingProviderType.TeamsForBusiness,
	IsReminderOn = true,
	HideAttendees = false,
	Categories = new List<string>
	{
		"Red category",
	},
};

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Me.Events["{event-id}"].PatchAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

CLI

mgc users events patch --user-id {user-id} --event-id {event-id} --body '{\
  "originalStartTimeZone": "originalStartTimeZone-value",\
  "originalEndTimeZone": "originalEndTimeZone-value",\
  "responseStatus": {\
    "response": "",\
    "time": "datetime-value"\
  },\
  "recurrence": null,\
  "reminderMinutesBeforeStart": 99,\
  "isOnlineMeeting": true,\
  "onlineMeetingProvider": "teamsForBusiness",\
  "isReminderOn": true,\
  "hideAttendees": false,\
  "categories": ["Red category"]\
}\
'

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

// Code snippets are only available for the latest major version. Current major version is $v1.*

// Dependencies
import (
	  "context"
	  msgraphsdk "github.com/microsoftgraph/msgraph-sdk-go"
	  graphmodels "github.com/microsoftgraph/msgraph-sdk-go/models"
	  //other-imports
)

requestBody := graphmodels.NewEvent()
originalStartTimeZone := "originalStartTimeZone-value"
requestBody.SetOriginalStartTimeZone(&originalStartTimeZone) 
originalEndTimeZone := "originalEndTimeZone-value"
requestBody.SetOriginalEndTimeZone(&originalEndTimeZone) 
responseStatus := graphmodels.NewResponseStatus()
response := graphmodels.NONE_RESPONSETYPE 
responseStatus.SetResponse(&response) 
time , err := time.Parse(time.RFC3339, "datetime-value")
responseStatus.SetTime(&time) 
requestBody.SetResponseStatus(responseStatus)
recurrence := null
requestBody.SetRecurrence(&recurrence) 
reminderMinutesBeforeStart := int32(99)
requestBody.SetReminderMinutesBeforeStart(&reminderMinutesBeforeStart) 
isOnlineMeeting := true
requestBody.SetIsOnlineMeeting(&isOnlineMeeting) 
onlineMeetingProvider := graphmodels.TEAMSFORBUSINESS_ONLINEMEETINGPROVIDERTYPE 
requestBody.SetOnlineMeetingProvider(&onlineMeetingProvider) 
isReminderOn := true
requestBody.SetIsReminderOn(&isReminderOn) 
hideAttendees := false
requestBody.SetHideAttendees(&hideAttendees) 
categories := []string {
	"Red category",
}
requestBody.SetCategories(categories)

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=go
events, err := graphClient.Me().Events().ByEventId("event-id").Patch(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

// Code snippets are only available for the latest version. Current version is 6.x

GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);

Event event = new Event();
event.setOriginalStartTimeZone("originalStartTimeZone-value");
event.setOriginalEndTimeZone("originalEndTimeZone-value");
ResponseStatus responseStatus = new ResponseStatus();
responseStatus.setResponse(ResponseType.None);
OffsetDateTime time = OffsetDateTime.parse("datetime-value");
responseStatus.setTime(time);
event.setResponseStatus(responseStatus);
event.setRecurrence(null);
event.setReminderMinutesBeforeStart(99);
event.setIsOnlineMeeting(true);
event.setOnlineMeetingProvider(OnlineMeetingProviderType.TeamsForBusiness);
event.setIsReminderOn(true);
event.setHideAttendees(false);
LinkedList<String> categories = new LinkedList<String>();
categories.add("Red category");
event.setCategories(categories);
Event result = graphClient.me().events().byEventId("{event-id}").patch(event);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const event = {
  originalStartTimeZone: 'originalStartTimeZone-value',
  originalEndTimeZone: 'originalEndTimeZone-value',
  responseStatus: {
    response: '',
    time: 'datetime-value'
  },
  recurrence: null,
  reminderMinutesBeforeStart: 99,
  isOnlineMeeting: true,
  onlineMeetingProvider: 'teamsForBusiness',
  isReminderOn: true,
  hideAttendees: false,
  categories: ['Red category']
};

await client.api('/me/events/{id}')
	.update(event);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Models\Event;
use Microsoft\Graph\Generated\Models\ResponseStatus;
use Microsoft\Graph\Generated\Models\ResponseType;
use Microsoft\Graph\Generated\Models\OnlineMeetingProviderType;


$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);

$requestBody = new Event();
$requestBody->setOriginalStartTimeZone('originalStartTimeZone-value');
$requestBody->setOriginalEndTimeZone('originalEndTimeZone-value');
$responseStatus = new ResponseStatus();
$responseStatus->setResponse(new ResponseType('none'));
$responseStatus->setTime(new \DateTime('datetime-value'));
$requestBody->setResponseStatus($responseStatus);
$requestBody->setRecurrence(null);
$requestBody->setReminderMinutesBeforeStart(99);
$requestBody->setIsOnlineMeeting(true);
$requestBody->setOnlineMeetingProvider(new OnlineMeetingProviderType('teamsForBusiness'));
$requestBody->setIsReminderOn(true);
$requestBody->setHideAttendees(false);
$requestBody->setCategories(['Red category', 	]);

$result = $graphServiceClient->me()->events()->byEventId('event-id')->patch($requestBody)->wait();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.Calendar

$params = @{
	originalStartTimeZone = "originalStartTimeZone-value"
	originalEndTimeZone = "originalEndTimeZone-value"
	responseStatus = @{
		response = ""
		time = [System.DateTime]::Parse("datetime-value")
	}
	recurrence = $null
	reminderMinutesBeforeStart = 99
	isOnlineMeeting = $true
	onlineMeetingProvider = "teamsForBusiness"
	isReminderOn = $true
	hideAttendees = $false
	categories = @(
	"Red category"
)
}

# A UPN can also be used as -UserId.
Update-MgUserEvent -UserId $userId -EventId $eventId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Python

# Code snippets are only available for the latest version. Current version is 1.x
from msgraph import GraphServiceClient
from msgraph.generated.models.event import Event
from msgraph.generated.models.response_status import ResponseStatus
from msgraph.generated.models.response_type import ResponseType
from msgraph.generated.models.online_meeting_provider_type import OnlineMeetingProviderType
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = Event(
	original_start_time_zone = "originalStartTimeZone-value",
	original_end_time_zone = "originalEndTimeZone-value",
	response_status = ResponseStatus(
		response = ResponseType.None,
		time = "datetime-value",
	),
	recurrence = None,
	reminder_minutes_before_start = 99,
	is_online_meeting = True,
	online_meeting_provider = OnlineMeetingProviderType.TeamsForBusiness,
	is_reminder_on = True,
	hide_attendees = False,
	categories = [
		"Red category",
	],
)

result = await graph_client.me.events.by_event_id('event-id').patch(request_body)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

The following example shows the response. Note: The response object shown here might be shortened for readability.

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

{
  "originalStartTimeZone": "originalStartTimeZone-value",
  "originalEndTimeZone": "originalEndTimeZone-value",
  "responseStatus": {
    "response": "",
    "time": "datetime-value"
  },
  "recurrence": null,
  "reminderMinutesBeforeStart": 99,
  "isOnlineMeeting": true,
  "onlineMeetingProvider": "teamsForBusiness",
  "isReminderOn": true,
  "hideAttendees": false,
  "onlineMeeting": {
        "joinUrl": "https://teams.microsoft.com/l/meetup-join/19%3ameeting_NzIyNzhlMGEtM2YyZC00ZmY0LTlhNzUtZmZjNWFmZGNlNzE2%40thread.v2/0?context=%7b%22Tid%22%3a%2272f988bf-86f1-41af-91ab-2d7cd011db47%22%2c%22Oid%22%3a%22bc55b173-cff6-457d-b7a1-64bda7d7581a%22%7d",
        "conferenceId": "177513992",
        "tollNumber": "+91 22 6241 6885"
  }
}

Related content

• Add custom data to resources using extensions
• Add custom data to users using open extensions
• Add custom data to groups using schema extensions