Script to change from Dynamic to Static MAC Address on all VMs

A customer had a lot of VM’s with Dynamic MAC address, rather than the preferred method of using Static MAC addresses.
Here is a small powershell script that will shutdown each of the VM’s with a Dynamic MAC Address, change to a Static MAC Address and then start the VM.
I’m running the script on the System Center Virtual Machine Manager (SCVMM) Server and to make sure VMM does not shutdown itself, I’ve added an exclude for the SCVMM Server.

$VMS = Get-SCVirtualMachine | Select -ExpandProperty VirtualNetworkAdapters | Where { $_.MACAddressType -eq "Dynamic" } | where Name -NotLike $env:COMPUTERNAME 

foreach ($VM in $VMS) { 
Get-SCVirtualMachine -Name $VM  | Stop-SCVirtualMachine -Shutdown 
$VirtualNetworkAdapter = Get-SCVirtualNetworkAdapter -VMMServer localhost -VM "$VM" 
Set-SCVirtualNetworkAdapter -VirtualNetworkAdapter $VirtualNetworkAdapter -MACAddress "00:00:00:00:00:00" -MACAddressType Static 
Start-SCVirtualMachine -VM $VM.Name
}

$VMS = Get-SCVirtualMachine | Select -ExpandProperty VirtualNetworkAdapters | Where { $_.MACAddressType -eq "Dynamic" } | where Name -NotLike $env:COMPUTERNAME

foreach ($VM in $VMS) {

Get-SCVirtualMachine -Name $VM | Stop-SCVirtualMachine -Shutdown

$VirtualNetworkAdapter = Get-SCVirtualNetworkAdapter -VMMServer localhost -VM "$VM"

Set-SCVirtualNetworkAdapter -VirtualNetworkAdapter $VirtualNetworkAdapter -MACAddress "00:00:00:00:00:00" -MACAddressType Static

Start-SCVirtualMachine -VM $VM.Name

}

The MACAddress 00:00:00:00:00:00 will automatically be transformed into a real static address from VMM’s mac address pool.

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