In today's digital landscape, managing application permissions is crucial for ensuring the security and proper functioning of your Windows environment. With the help of PowerShell, specifically the Get-AzADAppPermission cmdlet, you can easily retrieve and manage the permissions assigned to applications in Azure Active Directory (AD). This article will guide you through the process of using Get-AzADAppPermission to effectively manage application permissions in the Windows environment.

Examples:

1. Retrieving Application Permissions: To retrieve the permissions assigned to an application in Azure AD, you can use the following PowerShell command:

$applicationId = "<Application ID>"
$permissions = Get-AzADAppPermission -ApplicationId $applicationId
$permissions

This command will retrieve and display all the permissions assigned to the specified application.

2. Granting Application Permissions: To grant additional permissions to an application, you can use the Grant-AzADAppPermission cmdlet. For example, to grant the "User.Read" permission to an application, you can use the following command:

$applicationId = "<Application ID>"
$resourceAppId = "00000002-0000-0000-c000-000000000000" # Microsoft Graph API
$apiPermissions = New-Object Microsoft.Azure.Commands.ActiveDirectory.PSADTokenRolePermission
$apiPermissions.ResourceAppId = $resourceAppId
$apiPermissions.Scope = "User.Read"

Grant-AzADAppPermission -ApplicationId $applicationId -Permission $apiPermissions

This command will grant the specified permission to the application.

3. Revoking Application Permissions: To revoke a specific permission from an application, you can use the Revoke-AzADAppPermission cmdlet. For example, to revoke the "User.Read" permission from an application, you can use the following command:

$applicationId = "<Application ID>"
$resourceAppId = "00000002-0000-0000-c000-000000000000" # Microsoft Graph API
$apiPermissions = New-Object Microsoft.Azure.Commands.ActiveDirectory.PSADTokenRolePermission
$apiPermissions.ResourceAppId = $resourceAppId
$apiPermissions.Scope = "User.Read"

Revoke-AzADAppPermission -ApplicationId $applicationId -Permission $apiPermissions

This command will revoke the specified permission from the application.