adding classic exp retirement

Author: habibaum

articles/migrate/how-to-upgrade-windows.md

@@ -19,6 +19,7 @@ This article describes how to upgrade Windows Server OS while migrating to Azure
 > - The upgrade feature only works for Windows Server Standard, Datacenter, and Enterprise editions.
 > - The upgrade feature doesn't work for non en-US language servers. 
 > - This feature doesn't work for a Windows Server with an evaluation license and needs a full license. If you have any server with an evaluation license, upgrade to full edition before starting migration to Azure.
+> - Windows Server 2008 and Windows Server 2008 R2 have reached End of Life (EOL). For more information, see, End of support for Windows Server 2008 and Windows Server 2008 R2 | Microsoft Learn  and Perform in-place upgrade to Windows Server 2016, 2019, 2022, or 2025 , Review your usage and plan OS upgrades and migrations accordingly.
 
 ## Prerequisites 
 

articles/migrate/tutorial-migrate-physical-virtual-machines.md

@@ -47,6 +47,9 @@ Before you begin this tutorial, you should:
 - [Review](./agent-based-migration-architecture.md) the migration architecture.
 - [Review](../site-recovery/migrate-tutorial-windows-server-2008.md#limitations-and-known-issues) the limitations related to migrating Windows Server 2008 servers to Azure.
 
+> [!NOTE]
+> Windows Server 2008 and Windows Server 2008 R2 have reached End of Life (EOL). For more information, see, End of support for Windows Server 2008 and Windows Server 2008 R2 | Microsoft Learn  and Perform in-place upgrade to Windows Server 2016, 2019, 2022, or 2025 , Review your usage and plan OS upgrades and migrations accordingly.
+
 > [!NOTE]
 > If you're planning to upgrade your Windows operating system, Azure Migrate and Modernize might download the Windows SetupDiag utility for error details in case upgrade fails. Ensure that the VM created in Azure after the migration has access to [SetupDiag](https://go.microsoft.com/fwlink/?linkid=870142). If there's no access to SetupDiag, you might not be able to get detailed OS upgrade failure error codes but the upgrade can still proceed.