Updated the faq.yml file

Author: alkohli

azure-local/deploy/deployment-arc-register-local-ui.md

@@ -5,7 +5,7 @@ ms.topic: article
 author: alkohli
 ms.author: alkohli
 ms.service: azure-local
-ms.date: 02/20/2025
+ms.date: 03/03/2025
 ---
 
 # Register your Azure Local machines via the local UI (preview)
@@ -165,6 +165,9 @@ Follow these steps to configure the network settings and connect the machines to
 
    :::image type="content" source="media/deployment-arc-register-local-ui/setup-configuration-open-in-azure-portal.png" alt-text="Screenshot that shows the Azure Arc agent setup configuration status, open in Azure portal option for Azure Local ." lightbox="media/deployment-arc-register-local-ui/setup-configuration-open-in-azure-portal.png":::
 
+> [!NOTE]
+> Once an Azure Local machine is registered with Azure Arc, the only way to undo the registration is to install the operating system again on the machine.
+
 ## Step 2: Verify machines are connected to Arc
 
 1. In the Azure portal, go to the resource group for bootstrapping.

azure-local/faq.yml

@@ -123,6 +123,10 @@ sections:
           ------                         ----------------
           Microsoft Azure Stack HCI      23H2
           ```
+      - question: Is it possible to unregister an Azure Local machine with Azure Arc once it is registered?
+        answer: |
+          No. You can't undo the registration once you've registered the Azure Local machine with Azure Arc. To undo, you'll need to install the operating system again on the machine.        
+      
       - question: How long is Azure Local, version 22H2 supported?
         answer: |
             Azure Stack HCI, version 22H2 will reach end of support on May 31, 2025. After this date, you won't receive monthly security and quality updates. Support requests (SR) will only be available when performing an operating system upgrade. To continue receiving updates, we recommend that you upgrade your operating system to [version 23H2](./upgrade/upgrade-22h2-to-23h2-powershell.md).