How to modify Hardware UUID of a macOS Sierra Virtual machine in VMware fusion/parallel desktop
The text file that Fusion uses to assign this is editable when the VM is powered off (don't suspend, shut down the OS):

Turn off VM
In machine folder, change uuid.bios section in &lt;&gt;.vmx file (f e.g. uuid.bios = &quot;aa aa ...&quot;).
In machine folder delete .nvram file
Boot VM

In &quot;About this MAC&quot; you must see