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I have hit the limit of how many computers my domain admins will allow me to add to the Active Directory. Most of these are old VMs which are no longer in use. How do I query AD to find a list of all the machines I have added in the past so I can go about removing some of them?

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up vote 4 down vote accepted

You can not. AD does not record who registered a computer in it. This information is just not available. Reorganize your processes to track this as part of the adding workflow.

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Then how does AD know I have added the maximum number allowed by my admins? – Colin Desmond Nov 29 '11 at 10:05
There is a quota. Every time you add a computer it is counted against the quota. BUt WHICH machine was added is not remembered. – TomTom Nov 29 '11 at 10:08
Ah, that makes sense. Thank you. – Colin Desmond Nov 29 '11 at 10:15

Ask your domain admins to allow you specifically to add computers to a named OU; this lifts the default quota of 10 computers that all users may add to AD without specific administrator rights.

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