$servers = @('SVR1','SVR2','SVR3','SVR4')

#Get all VM's with Configuration Ver. 8.0
$VMs = Get-VM -ComputerName $servers | Where-Object {$_.Version -eq '8.0'}

foreach ($VM in $VMs)
{
    #Get Current VM running state and name
    $state = $VM.State
    $VMName = $VM.Name

    try
    {
        #If VM is running, try to stop it
       if ($State -eq 'Running')
       {
           Stop-VM -VM $VM
           Write-Host "Stopping VM $VMName" -BackgroundColor Red
        }
        else
        {
            Write-Host "$VMName is Offline"
        }
    }
    catch
    {
        Write-host "$VMName was unable to be stopped"
    }

    $maxRepeat = 20

    #Check every 60 seconds to see if the VM has stopped running, or break.
    while ( ($VM.State -eq 'Running') -and ($maxRepeat -ne 0) )
    {
        Write-Host "VM is still running..." -ForegroundColor Red
        Stop-VM -VM $VM
        $maxRepeat--
        Start-Sleep -Seconds 60
    }
    if ($VM.State -eq 'Off')
    {
        try
        {
            Update-VMVersion -Name $VMName -ComputerName $VM.ComputerName -Confirm:$false
            Write-Host "$VMName Configuration has been updated to 9.0, starting VM"
            Start-VM -Name $VMName -ComputerName $VM.ComputerName
        }
        catch
        {
            Write-Host "$VMName Configuration has failed updating" -ForegroundColor Red
        }
    }
}