Added unsupported 3rd party tool in upgrade docs

Author: alkohli

azure-local/upgrade/about-upgrades-23h2.md

@@ -3,7 +3,7 @@ title: About Azure Local upgrade to version 23H2
 description: Learn how to upgrade from Azure Local, version 22H2 to Azure Local, version 23H2.
 author: alkohli
 ms.topic: conceptual
-ms.date: 11/26/2024
+ms.date: 12/30/2024
 ms.author: alkohli
 ms.reviewer: alkohli
 ms.service: azure-stack-hci
@@ -62,6 +62,7 @@ The following diagram illustrates the Azure Local upgrade process:
 > [!IMPORTANT]
 > - Consult your hardware OEM before you upgrade Azure Local. Validate that your OEM supports the version and the upgrade.
 > - Upgrading your Azure Local from version 22H2 is only supported for regions where Azure Local, version 23H2 is available. For more information, see [Azure Local region availability](../concepts/system-requirements-23h2.md#azure-requirements).
+> - Use of 3rd party tools to install upgrades is not supported.
 
 Azure Local upgrade supports the following services and workloads:
 

azure-local/upgrade/upgrade-22h2-to-23h2-powershell.md

@@ -47,6 +47,9 @@ Before you begin, make sure that:
 
 > [!NOTE]
 > The ISO file is only required if the machines do not have access to Windows Update to download the OS feature update. If using this method, after you [Connect to Azure Local, version 22H2](#step-1-connect-to-azure-local), skip to step 6 under [Step 2: Install new OS using PowerShell](#step-2-install-new-os-using-powershell) and perform the remaining steps.
+> Use of 3rd party tools to install upgrades is not supported.
+
+Follow these steps to install the solution upgrade:
 
 ## Step 1: Connect to Azure Local