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← cd ~/graph-permissions
// graph-permissions · Calls

Calls.JoinGroupCallAsGuest.AllMicrosoft Graph permission · Medium risk

Allows the app to anonymously join group calls and scheduled meetings in your organization, without a signed-in user. The app will be joined as a guest to meetings in your organization.

Application permission

Medium risk

Join group calls and meetings as a guest. Allows the app to anonymously join group calls and scheduled meetings in your organization, without a signed-in user. The app will be joined as a guest to meetings in your organization.

IDfd7ccf6b-3d28-418b-9701-cd10f5cd2fd4
ConsentAlways needs admin consent
RiskReads data across the tenant without a signed-in user.

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:

powershell5 lines
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 "fd7ccf6b-3d28-418b-9701-cd10f5cd2fd4"

Which apps already have it?

powershell6 lines
# Apps that hold Calls.JoinGroupCallAsGuest.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 "fd7ccf6b-3d28-418b-9701-cd10f5cd2fd4" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime

Other Calls permissions

Check every app in your tenant → Permission explainer

Sources