I got the following error message when trying to turn on virtual machine as I have a manual mac address added – Power On virtual machine vyos1 Navigates to Virtual machine 00:0c:29:6a:b6:d6 is not an allowed VPX-assigned Ethernet address. It conflicts with VMware reserved MACs for other usage. Failed to start the virtual machine. Module DevicePowerOn power on failed. Could not set up “macAddress” for ethernet0. Invalid MAC addres
fixed it with the following command which basically changes the check mac address to a false value
Get-VM "Your VM"| New-AdvancedSetting -Name ethernet0.checkMACAddress -Value false -Force -Confirm:$false
then i was able to power it on