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Assign custom roles with resource scope using PowerShell in Azure Active Directory

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This article describes how to create a role assignment at organization-wide scope in Azure Active Directory (Azure AD). Assigning a role at organization-wide scope grants access across the Azure AD organization. To create a role assignment with a scope of a single Azure AD resource, see How to create a custom role and assign it at resource scope. This article uses the Azure Active Directory PowerShell Version 2 module.

For more information about Azure AD roles, see Azure AD built-in roles.

Prerequisites

  • Azure AD Premium P1 or P2 license
  • Privileged Role Administrator or Global Administrator
  • AzureADPreview module when using PowerShell

For more information, see Prerequisites to use PowerShell or Graph Explorer.

Assign a directory role to a user or service principal with resource scope

  1. Load the Azure AD PowerShell (Preview) module.
  2. Sign in by executing the command Connect-AzureAD.
  3. Create a new role using the following PowerShell script.
## Assign a role to a user or service principal with resource scope
# Get the user and role definition you want to link
$user = Get-AzureADUser -Filter "userPrincipalName eq 'cburl@f128.info'"
$roleDefinition = Get-AzureADMSRoleDefinition -Filter "displayName eq 'Application Support Administrator'"

# Get app registration and construct resource scope for assignment.
$appRegistration = Get-AzureADApplication -Filter "displayName eq 'f/128 Filter Photos'"
$directoryScope = '/' + $appRegistration.objectId

# Create a scoped role assignment
$roleAssignment = New-AzureADMSRoleAssignment -DirectoryScopeId $directoryScope -RoleDefinitionId $roleDefinition.Id -PrincipalId $user.objectId

To assign the role to a service principal instead of a user, use the Get-AzureADMSServicePrincipal cmdlet.

Role definitions

Role definition objects contain the definition of the built-in or custom role, along with the permissions that are granted by that role assignment. This resource displays both custom role definitions and built-in directory roles (which are displayed in roleDefinition equivalent form). For information about the maximum number of custom roles that can be created in an Azure AD organization, see Azure AD service limits and restrictions.

Create a role definition

# Basic information
$description = "Can manage credentials of application registrations"
$displayName = "Application Registration Credential Administrator"
$templateId = (New-Guid).Guid

# Set of actions to include
$rolePermissions = @{
    "allowedResourceActions" = @(
        "microsoft.directory/applications/standard/read",
        "microsoft.directory/applications/credentials/update"
    )
}

# Create new custom directory role
$customAdmin = New-AzureADMSRoleDefinition -RolePermissions $rolePermissions -DisplayName $displayName -Description $description -TemplateId $templateId -IsEnabled $true

Read and list role definitions

# Get all role definitions
Get-AzureADMSRoleDefinitions

# Get single role definition by ID
Get-AzureADMSRoleDefinition -Id 86593cfc-114b-4a15-9954-97c3494ef49b

# Get single role definition by templateId
Get-AzureADMSRoleDefinition -Filter "templateId eq 'c4e39bd9-1100-46d3-8c65-fb160da0071f'"

Update a role definition

# Update role definition
# This works for any writable property on role definition. You can replace display name with other
# valid properties.
Set-AzureADMSRoleDefinition -Id c4e39bd9-1100-46d3-8c65-fb160da0071f -DisplayName "Updated DisplayName"

Delete a role definition

# Delete role definition
Remove-AzureADMSRoleDefinitions -Id c4e39bd9-1100-46d3-8c65-fb160da0071f

Role assignments

Role assignments contain information linking a given security principal (a user or application service principal) to a role definition. If required, you can add a scope of a single Azure AD resource for the assigned permissions. Restricting the scope of a role assignment is supported for built-in and custom roles.

Create a role assignment

# Get the user and role definition you want to link
$user = Get-AzureADUser -Filter "userPrincipalName eq 'cburl@f128.info'"
$roleDefinition = Get-AzureADMSRoleDefinition -Filter "displayName eq 'Application Support Administrator'"

# Get app registration and construct resource scope for assignment.
$appRegistration = Get-AzureADApplication -Filter "displayName eq 'f/128 Filter Photos'"
$directoryScope = '/' + $appRegistration.objectId

# Create a scoped role assignment
$roleAssignment = New-AzureADMSRoleAssignment -DirectoryScopeId $directoryScope -RoleDefinitionId $roleDefinition.Id -PrincipalId $user.objectId

Read and list role assignments

# Get role assignments for a given principal
Get-AzureADMSRoleAssignment -Filter "principalId eq '27c8ca78-ab1c-40ae-bd1b-eaeebd6f68ac'"

# Get role assignments for a given role definition 
Get-AzureADMSRoleAssignment -Filter "roleDefinitionId eq '355aed8a-864b-4e2b-b225-ea95482e7570'"

Remove a role assignment

# Remove role assignment
Remove-AzureADMSRoleAssignment -Id 'qiho4WOb9UKKgng_LbPV7tvKaKRCD61PkJeKMh7Y458-1'

Next steps