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// graph-permissions · Tasks

Tasks.ReadWrite.AllMicrosoft Graph permission · High risk

Allows the app to create, read, update and delete all users’ tasks and task lists in your organization, without a signed-in user

Application permission

High risk

Read and write all users’ tasks and tasklists. Allows the app to create, read, update and delete all users’ tasks and task lists in your organization, without a signed-in user

ID44e666d1-d276-445b-a5fc-8815eeb81d55
ConsentAlways needs admin consent
RiskCan change data across the whole tenant.

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 "44e666d1-d276-445b-a5fc-8815eeb81d55"

Which apps already have it?

powershell6 lines
# Apps that hold Tasks.ReadWrite.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 "44e666d1-d276-445b-a5fc-8815eeb81d55" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime

Other Tasks permissions

Check every app in your tenant → Permission explainer

Sources