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// graph-permissions · UserAuthMethod-WindowsHello

UserAuthMethod-WindowsHello.Read.AllMicrosoft Graph permission · Medium risk

Allows the app to read Windows Hello authentication methods of all users in your organization, without a signed-in user. This does not allow the app to see secret information like passwords, or to sign-in or otherwise use the authentication methods.

Application permission

Medium risk

Read all users' Windows Hello methods. Allows the app to read Windows Hello authentication methods of all users in your organization, without a signed-in user. This does not allow the app to see secret information like passwords, or to sign-in or otherwise use the authentication methods.

ID9b8dd4c7-8cca-4ef5-a34a-9c2c75fcc934
ConsentAlways needs admin consent
RiskReads data across the tenant without a signed-in user.

Delegated permission

Low risk

Read all users' Windows Hello methods. Allows the app to read Windows Hello authentication methods of all users in your organization that the signed-in user has access to. This does not allow the app to see secret information like passwords, or to sign-in or otherwise use the authentication methods.

IDff37d46d-b88a-4e0c-85ee-7e26c37b18eb
ConsentNeeds admin consent
RiskRead access, limited to what the signed-in user can see.

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 "9b8dd4c7-8cca-4ef5-a34a-9c2c75fcc934"

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 "UserAuthMethod-WindowsHello.Read.All"

Which apps already have it?

powershell6 lines
# Apps that hold UserAuthMethod-WindowsHello.Read.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 "9b8dd4c7-8cca-4ef5-a34a-9c2c75fcc934" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for UserAuthMethod-WindowsHello.Read.All
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 "UserAuthMethod-WindowsHello.Read.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other UserAuthMethod-WindowsHello permissions

Check every app in your tenant → Permission explainer