Merge pull request #237963 from rpsqrd/2008r2fix

resurrecting 2008 r2 support

Author: prmerger-automator[bot]

articles/azure-arc/servers/prerequisites.md

@@ -35,7 +35,7 @@ If two agents use the same configuration, you will encounter inconsistent behavi
 
 Azure Arc supports the following Windows and Linux operating systems. Only x86-64 (64-bit) architectures are supported. The Azure Connected Machine agent does not run on x86 (32-bit) or ARM-based architectures.
 
-* Windows Server 2012 R2, 2016, 2019, and 2022
+* Windows Server 2008 R2 SP1, 2012 R2, 2016, 2019, and 2022
   * Both Desktop and Server Core experiences are supported
   * Azure Editions are supported on Azure Stack HCI
 * Windows 10, 11 (see [client operating system guidance](#client-operating-system-guidance))
@@ -72,7 +72,7 @@ Microsoft doesn't recommend running Azure Arc on short-lived (ephemeral) servers
 Windows operating systems:
 
 * NET Framework 4.6 or later. [Download the .NET Framework](/dotnet/framework/install/guide-for-developers).
-* Windows PowerShell 4.0 or later (already included with Windows Server 2012 R2 and later).
+* Windows PowerShell 4.0 or later (already included with Windows Server 2012 R2 and later). For Windows Server 2008 R2 SP1, [Download Windows Management Framework 5.1.](https://www.microsoft.com/download/details.aspx?id=54616).
 
 Linux operating systems: