← cd ~/graph-permissions
// graph-permissions · ExternalItem
ExternalItem.ReadWrite.AllMicrosoft Graph permission · High risk
Allow the app to read or write items in all external datasets that the app is authorized to access
Application permission
High riskRead and write items in external datasets. Allow the app to read or write items in all external datasets that the app is authorized to access
| ID | 38c3d6ee-69ee-422f-b954-e17819665354 |
|---|---|
| Consent | Always needs admin consent |
| Risk | Can change data across the whole tenant. |
Delegated permission
High riskRead and write all external items. Allows the app to read and write all external items on behalf of a signed-in user. The signed-in user must be an administrator.
| ID | b02c54f8-eb48-4c50-a9f0-a149e5a2012f |
|---|---|
| Consent | Needs admin consent |
| Risk | Can 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:
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 "38c3d6ee-69ee-422f-b954-e17819665354"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.
Connect-MgGraph -Scopes "ExternalItem.ReadWrite.All"Which apps already have it?
# Apps that hold ExternalItem.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 "38c3d6ee-69ee-422f-b954-e17819665354" |
Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime# Apps with delegated consent for ExternalItem.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 "ExternalItem.ReadWrite.All" } |
Select-Object ClientId, ConsentType, PrincipalId