I deal with a lot of Windows devices and I have yet to see one with a Machine GUID that is not a valid UUID until now. I have seen 2 devices like this.
I run the command
Get-ItemProperty -Path HKLM:\SOFTWARE\Microsoft\Cryptography -Name "MachineGuid" and receive what looks like a valid UUID4 in the 8-4-4-4-12 format with a 4 at the beginning of the 3rd group until the very end where there is a capital "T". The T is not valid hexadecimal and is capitalized while the rest of the letters are lowercase. The T is in the 32nd position of what would otherwise have been a valid UUID.
xxxxxxxx-xxxx-4xxx-xxxx-xxxxxxxxxxxT
They are both physical machines running Windows 11. What does the T mean? What convention is Microsoft using here if it is not UUID anymore for machine GUID? Thanks!
