XML SMBIOS Sysinfo not being applied to VM

[goodmane]

Hi guys,

I have the need to apply a serial number to my VM so it will work with some Intune testing i'm doing.  I have an existing Win10 VM and edited the XML file using recommendations from the following other threads:

 

 

However, when I boot up my VM I still don't see a serial number set.

 

 

Here's a snippet of my XML which has the appropriate code in it.  (I was putting in the code verbatim from the other post for now but once it worked I was going to change the S/N to be unique)

 

I looked at the logs of the VM when it was booting up and didn't see any errors.  I do see where it picked up the settings OK, supposedly:

 

What am I missing?

 

Thanks in advance!

 

EDIT: my screenshots seem to be re-appearing at the bottom of this message again.  I've edited but can't get them to go away.  Apologies if this is a noob thing

Edited July 6, 2022 by goodmane
removed extra screenshots

[goodmane]

Replying to my own thread.  I created a brand new VM with the options in the XML and it worked well.  So I guess I have to have it in there during the initial Win10 install and can't add it to an existing VM.