I had an issue today with an old KMS server that some machines had been talking to getting shut down and then the machines months later complaining that they couldn’t find the KMS server.  I  then removed the KMS server’s DNS entries and prevented it from publishing them to dns which had been missed before.  That isn’t the purpose of this post though so if you need more info the below two links help out a lot.

How to remove a KMS Server from your Infrastructure

Additional info for Server 2008 only.

Back to the purpose of my post was when I get tickets for activations (as I have over the past few days) I wanted an easy script to run slmgr, remove the product key, input, and activate the new key.  We use MAK keys in our environment so just for the few machines that were set up for…