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// graph-permissions · Policy

Policy.ReadWrite.AuthenticationMethodMicrosoft Graph permission · Medium risk

Allows the app to read and write all authentication method policies for the tenant, without a signed-in user.

Application permission

Medium risk

Read and write all authentication method policies . Allows the app to read and write all authentication method policies for the tenant, without a signed-in user.

ID29c18626-4985-4dcd-85c0-193eef327366
ConsentAlways needs admin consent
RiskCan make changes. Check the scope is as narrow as possible.

Delegated permission

Medium risk

Read and write authentication method policies. Allows the app to read and write the authentication method policies, on behalf of the signed-in user.

ID7e823077-d88e-468f-a337-e18f1f0e6c7c
ConsentNeeds admin consent
RiskCan make changes. Check the scope is as narrow as possible.

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 "29c18626-4985-4dcd-85c0-193eef327366"

Ask for it when signing in

Delegated permissions act as the signed-in user, so the app can never do more than that user can.

powershell1 line
Connect-MgGraph -Scopes "Policy.ReadWrite.AuthenticationMethod"

Which apps already have it?

powershell6 lines
# Apps that hold Policy.ReadWrite.AuthenticationMethod 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 "29c18626-4985-4dcd-85c0-193eef327366" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for Policy.ReadWrite.AuthenticationMethod
Connect-MgGraph -Scopes "Application.Read.All", "Directory.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgOauth2PermissionGrant -All |
    Where-Object { $_.ResourceId -eq $graph.Id -and ($_.Scope -split " ") -contains "Policy.ReadWrite.AuthenticationMethod" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other Policy permissions

Check every app in your tenant → Permission explainer

Sources