You cannot start virtual machines on a computer that is running Windows Server 2008 R2 and on which a CPU is installed that supports the AVX feature

Workaround for Windows Server 2008 R2

• The workaround also sets compatibility for other CPU features such as Cache line size. Therefore, the virtual machines cannot use the full capabilities of the CPU.
• The workaround is required to be run every time that a new virtual machine is created.

                LimitProcFeatures.ps1:

$VirtualMachines = gwmi -namespace "root\virtualization" Msvm_ComputerSystem
$VMManagementService = Get-WmiObject -Namespace "root\virtualization" -Class Msvm_VirtualSystemManagementService

foreach ($vm in $VirtualMachines)
{
    $vmName = $vm.Name
    $vmElementName = $vm.ElementName
        if(!$vm.Caption.Contains("Hosting Computer System"))
        {
            Write-Output "Limiting $vmElementName CPU features"
            $VMProcessors = (gwmi -namespace "root\virtualization" Msvm_ProcessorSettingData) | where { $_.InstanceID -match "Microsoft:$vmName.*" } 
            $VMProcessors | foreach { $_.LimitProcessorFeatures = $true}  
            $retValue = $VMProcessors | foreach {$VMManagementService.ModifyVirtualSystemResources($vm.__PATH, $_.GetText([System.Management.TextFormat]::WmiDtd20) )}
            if(!$retValue.ReturnValue)
            {
                Write-Output "Success";
            }
        }
}