Change a product key in Microsoft Server 2012

When installing Microsoft Server it may be necessary to change the product key. An example of this would be installing an evaluation copy for testing and then purchasing a full license for when the server goes into production.

There is no obvious link to add or overwrite a product key so it can be achieved in the following way :

1. Go to the Home Screen of Server 2012 (if you are on the desktop) by pressing the Windows key or point to the lower-right corner of the screen, and then click Search.
2. Type Slui.exe 0x3
3. click the Slui.exe 0x3 icon
4. This will give you the option to enter your new product key. Enter the key and then click Activate.

Your new product key will now be active on your server.