How can I programmatically get the GUID of my machine?

A. You can use the uuID attributes of the Win32_ComputerSystemProduct class to get the machine's GUID, which is read from the BIOS, as the following sample code shows:

    

strComputer ="."

' -------------------------------------------- Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2") Set colItems = objWMIService.ExecQuery ("SELECT * FROM Win32_ComputerSystemProduct")

' On Error Resume Next For Each objComputer In colItems Wscript.Echo "uuID: " & objComputer.uuID Next

WScript.Quit

For example:
D:\temp>cscript getuuid.vbs

produces the following result:

uuID: 4C4C4544-0051-5810-8039-B6C04F533931

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