Files.ReadWrite.AllMicrosoft Graph permission · High risk
Allows the app to read, create, update and delete all files in all site collections without a signed in user.
Application permission
High riskRead and write files in all site collections. Allows the app to read, create, update and delete all files in all site collections without a signed in user.
| ID | 75359482-378d-4052-8f01-80520e7db3cd |
|---|---|
| Consent | Always needs admin consent |
| Risk | As an application permission this reaches every user's data in the tenant, without anyone signed in. |
Delegated permission
High riskHave full access to all files user can access. Allows the app to read, create, update and delete all files the signed-in user can access.
| ID | 863451e7-0667-486c-a5d6-d135439485f0 |
|---|---|
| Consent | Users can consent, if your consent settings allow it |
| Risk | Can change data across the whole tenant. |
Least-privilege alternative
Use Sites.Selected where the files live in specific sites, or delegated Files.ReadWrite for the signed-in user's own files.
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 "75359482-378d-4052-8f01-80520e7db3cd"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 "Files.ReadWrite.All"Which apps already have it?
# Apps that hold Files.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 "75359482-378d-4052-8f01-80520e7db3cd" |
Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime# Apps with delegated consent for Files.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 "Files.ReadWrite.All" } |
Select-Object ClientId, ConsentType, PrincipalId