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

AuthenticationContext.ReadWrite.AllMicrosoft Graph permission · High risk

Allows the app to read and update the authentication context information in your organization without a signed-in user.

Application permission

High risk

Read and write all authentication context information. Allows the app to read and update the authentication context information in your organization without a signed-in user.

IDa88eef72-fed0-4bf7-a2a9-f19df33f8b83
ConsentAlways needs admin consent
RiskCan change data across the whole tenant.

Delegated permission

High risk

Read and write all authentication context information. Allows the app to read and update all authentication context information in your organization on behalf of the signed-in user.

IDba6d575a-1344-4516-b777-1404f5593057
ConsentNeeds 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 "a88eef72-fed0-4bf7-a2a9-f19df33f8b83"

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 "AuthenticationContext.ReadWrite.All"

Which apps already have it?

powershell6 lines
# Apps that hold AuthenticationContext.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 "a88eef72-fed0-4bf7-a2a9-f19df33f8b83" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for AuthenticationContext.ReadWrite.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 "AuthenticationContext.ReadWrite.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other AuthenticationContext permissions

Check every app in your tenant → Permission explainer

Sources