We have recently had a new windows server 2008 server in the school which we are using as a WDS server. While experimenting with unattended installation using a sysprep.inf file I encountered a problem. The file works but it will not accept our volume license key. The error I receive is "The product ID you entered is not valid".

Before I captured the image I run sysprep using the "Use minisetup" and "reseal" options.

I'm thinking that the installation is somehow become an OEM install and is asking for an OEM key.

Any ideas?