I recently needed to verify that SYSPREP had been run on a few servers. You can download a utility PSGETSID to do this, but I didn't want to introduce an external utility to the servers.
I found the following PowerShell code to get the SID of the local Administrator account.
$u = New-Object System.Security.Principal.NTAccount('administrator') $SID = $u.Translate([System.Security.Principal.SecurityIdentifier]) $sid.Value
This returns a SID with -500 on the end. If you ignore the -500, the SID is the SID of the local machine. If this is unique, you know that SYSPREP was used.
You can also look for the CloneTag value in HKLM:\SYSTEM\Setup. This contains the time when SYSPREP was run. However, I prefer to see the unique SID.
More info about using SYSPREP:
"This is very useful! I’ve been looking for a way to check the SID without external tools. Thanks for sharing!"
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"Can this method be used to get SIDs of other local accounts as well, or is it specific to the Administrator account?"
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"This will definitely come in handy for post-SYSPREP verification. Thanks for simplifying the process!"
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"This article is a lifesaver for admins trying to maintain security and reduce dependencies on external tools."
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"Would you recommend this method for a large-scale audit, or is it better suited for individual checks?"
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"Great insight! I wonder if this can be automated for multiple servers in a network."
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"This approach not only saves time but also keeps the server environment clean from unnecessary utilities. Good job!"
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