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Calendars.ReadBasic.All

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Application Read All Resources

Allows the app to read events of all calendars, except for properties such as body, attachments, and extensions, without a signed-in user.

Delegated Access App-Only Access

Permission Details

Application Permission

Read basic details of calendars in all mailboxes

Allows the app to read events of all calendars, except for properties such as body, attachments, and extensions, without a signed-in user.

Properties

Property Type Description
id string The unique identifier for an entity. Read-only.
owner object If set, this represents the user who created or added the calendar. For a calendar that the user created or added, the owner property is set to the user. For a calendar shared with the user, the owner property is set to the person who shared that calendar with the user. Read-only.
multiValueExtendedProperties microsoft.graph.multiValueLegacyExtendedProperty collection The collection of multi-value extended properties defined for the calendar. Read-only. Nullable.
canViewPrivateItems booleanNullable true if the user can read calendar items that have been marked private, false otherwise. This property is set through an Outlook client or the corresponding calendarPermission resource. Read-only.
name stringNullable The calendar name.
defaultOnlineMeetingProvider object The default online meeting provider for meetings sent from this calendar. The possible values are: unknown, skypeForBusiness, skypeForConsumer, teamsForBusiness.
calendarPermissions microsoft.graph.calendarPermission collection The permissions of the users with whom the calendar is shared.
color object Specifies the color theme to distinguish the calendar from other calendars in a UI. The property values are: auto, lightBlue, lightGreen, lightOrange, lightGray, lightYellow, lightTeal, lightPink, lightBrown, lightRed, maxColor.
isRemovable booleanNullable Indicates whether this user calendar can be deleted from the user mailbox.
canEdit booleanNullable true if the user can write to the calendar, false otherwise. This property is true for the user who created the calendar. This property is also true for a user who has been shared a calendar and granted write access, through an Outlook client or the corresponding calendarPermission resource. Read-only.
singleValueExtendedProperties microsoft.graph.singleValueLegacyExtendedProperty collection The collection of single-value extended properties defined for the calendar. Read-only. Nullable.
hexColor stringNullable The calendar color, expressed in a hex color code of three hexadecimal values, each ranging from 00 to FF and representing the red, green, or blue components of the color in the RGB color space. If the user has never explicitly set a color for the calendar, this property is empty.
events microsoft.graph.event collection The events in the calendar. Navigation property. Read-only.
canShare booleanNullable true if the user has the permission to share the calendar, false otherwise. Only the user who created the calendar can share it. Read-only.
isDefaultCalendar booleanNullable true if this is the default calendar where new events are created by default, false otherwise.

Showing 15 of 22 properties. View all on Microsoft Learn →

Relationships

Relationship Type Description
calendarView event collection The calendar view for the calendar. Navigation property. Read-only.
events event collection The events in the calendar. Navigation property. Read-only.
singleValueExtendedProperties singleValueExtendedProperties collection The collection of single-value extended properties defined for the calendar. Read-only. Nullable.
multiValueExtendedProperties multiValueExtendedProperties collection The collection of multi-value extended properties defined for the calendar. Read-only. Nullable.
calendarPermissions calendarPermission collection The permissions of the users with whom the calendar is shared.

Graph Methods

Delegated access App-only access

No API methods available for this version.

No API methods available for this version.

No PowerShell cmdlets found for this permission.

No PowerShell cmdlets found for this permission.

Code Examples

C# / .NET SDK
// Install: dotnet add package Microsoft.Graph
// Install: dotnet add package Azure.Identity
using Microsoft.Graph;
using Azure.Identity;



// Application permissions - daemon/service app
var tenantId = "YOUR_TENANT_ID";
var clientId = "YOUR_CLIENT_ID";
var clientSecret = "YOUR_CLIENT_SECRET";

var credential = new ClientSecretCredential(tenantId, clientId, clientSecret);
var graphClient = new GraphServiceClient(credential);

// Example: GET /users/{user-id}
var users = await graphClient.Users.GetAsync();
foreach (var user in users?.Value ?? [])
{
    Console.WriteLine($"User: {user.DisplayName}");
}
JavaScript / TypeScript
// npm install @azure/msal-browser @microsoft/microsoft-graph-client
import { PublicClientApplication } from "@azure/msal-browser";
import { Client } from "@microsoft/microsoft-graph-client";
import { AuthCodeMSALBrowserAuthenticationProvider } from 
    "@microsoft/microsoft-graph-client/authProviders/authCodeMsalBrowser";

const msalConfig = {
    auth: {
        clientId: "YOUR_CLIENT_ID",
        authority: "https://login.microsoftonline.com/YOUR_TENANT_ID"
    }
};

const pca = new PublicClientApplication(msalConfig);
await pca.initialize();



// Application: Use client credentials (Node.js backend only)
// npm install @azure/identity @microsoft/microsoft-graph-client
import { ClientSecretCredential } from "@azure/identity";
import { TokenCredentialAuthenticationProvider } from 
    "@microsoft/microsoft-graph-client/authProviders/azureTokenCredentials";

const credential = new ClientSecretCredential(
    "YOUR_TENANT_ID",
    "YOUR_CLIENT_ID", 
    "YOUR_CLIENT_SECRET"
);

const authProvider = new TokenCredentialAuthenticationProvider(credential, {
    scopes: ["https://graph.microsoft.com/.default"]
});

const graphClient = Client.initWithMiddleware({ authProvider });
const result = await graphClient.api("/users").get();
console.log(result);
PowerShell
# Install Microsoft Graph PowerShell module
Install-Module Microsoft.Graph -Scope CurrentUser



# Application access with certificate
$params = @{
    ClientId = "YOUR_CLIENT_ID"
    TenantId = "YOUR_TENANT_ID"
    CertificateThumbprint = "YOUR_CERT_THUMBPRINT"
}
Connect-MgGraph @params

# Or with client secret (not recommended for production)
# Connect-MgGraph -ClientSecretCredential $credential

# Example: GET /users
$result = Invoke-MgGraphRequest -Method GET -Uri "https://graph.microsoft.com/v1.0/users"
$result | ConvertTo-Json -Depth 5

# Always disconnect when done
Disconnect-MgGraph
Python
# pip install msgraph-sdk azure-identity
from azure.identity import InteractiveBrowserCredential, ClientSecretCredential
from msgraph import GraphServiceClient
import asyncio



# Application permissions - client credentials
credential = ClientSecretCredential(
    tenant_id="YOUR_TENANT_ID",
    client_id="YOUR_CLIENT_ID",
    client_secret="YOUR_CLIENT_SECRET"
)
scopes = ["https://graph.microsoft.com/.default"]
client = GraphServiceClient(credential, scopes)

async def get_users():
    # Example: GET /users
    result = await client.users.get()
    for user in result.value:
        print(f"User: {user.display_name}")
    return result

asyncio.run(get_users())

App Registration

1

Navigate to Azure Portal

Go to App registrations in Microsoft Entra admin center

2

Add API Permission

Select your app → API permissions → Add a permission → Microsoft Graph

3

Select Permission Type

Choose Application permissions and search for Calendars.ReadBasic.All

4

Grant Admin Consent

Application permissions always require admin consent. Click "Grant admin consent" in the Azure portal.