← cd ~/graph-permissions
// graph-permissions · Calendars
Calendars.ReadBasic.AllMicrosoft Graph permission · High risk
Allows the app to read events of all calendars, except for properties such as body, attachments, and extensions, without a signed-in user.
Application permission
High riskRead 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.
| ID | 8ba4a692-bc31-4128-9094-475872af8a53 |
|---|---|
| Consent | Always needs admin consent |
| Risk | As an application permission this reaches every user's data in the tenant, without anyone signed in. |
Grant it to an app
In the portal: App registrations › your app › API permissions › Add a permission › Microsoft Graph › Application permissions, then grant admin consent. Or with Graph PowerShell:
Connect-MgGraph -Scopes "Application.Read.All", "AppRoleAssignment.ReadWrite.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
$app = Get-MgServicePrincipal -Filter "appId eq '<your app's client id>'"
New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId $app.Id `
-PrincipalId $app.Id -ResourceId $graph.Id -AppRoleId "8ba4a692-bc31-4128-9094-475872af8a53"Which apps already have it?
# Apps that hold Calendars.ReadBasic.All as an application permission
Connect-MgGraph -Scopes "Application.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgServicePrincipalAppRoleAssignedTo -ServicePrincipalId $graph.Id -All |
Where-Object AppRoleId -eq "8ba4a692-bc31-4128-9094-475872af8a53" |
Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime