azureblog.co.uk
← cd ~/graph-permissions
// graph-permissions · Calls

Calls.AccessMedia.AllMicrosoft Graph permission · Medium risk

Allows the app to get direct access to media streams in a call, without a signed-in user.

Application permission

Medium risk

Access media streams in a call as an app. Allows the app to get direct access to media streams in a call, without a signed-in user.

IDa7a681dc-756e-4909-b988-f160edc6655f
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 "a7a681dc-756e-4909-b988-f160edc6655f"

Which apps already have it?

powershell6 lines
# Apps that hold Calls.AccessMedia.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 "a7a681dc-756e-4909-b988-f160edc6655f" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime

Other Calls permissions

Check every app in your tenant → Permission explainer

Sources