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// graph-permissions · Synchronization

Synchronization.ReadWrite.AllMicrosoft Graph permission · High risk

Allows the application to configure the Azure AD synchronization service, without a signed-in user.

Application permission

High risk

Read and write all Azure AD synchronization data.. Allows the application to configure the Azure AD synchronization service, without a signed-in user.

ID9b50c33d-700f-43b1-b2eb-87e89b703581
ConsentAlways needs admin consent
RiskCan change data across the whole tenant.

Delegated permission

High risk

Read and write all Azure AD synchronization data. Allows the app to configure the Azure AD synchronization service, on behalf of the signed-in user.

ID7bb27fa3-ea8f-4d67-a916-87715b6188bd
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 "9b50c33d-700f-43b1-b2eb-87e89b703581"

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 "Synchronization.ReadWrite.All"

Which apps already have it?

powershell6 lines
# Apps that hold Synchronization.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 "9b50c33d-700f-43b1-b2eb-87e89b703581" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for Synchronization.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 "Synchronization.ReadWrite.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other Synchronization permissions

Check every app in your tenant → Permission explainer

Sources