While it's not possible to install QV on a domain controller, sadly it is possible for a server to be promoted to a domain controller.
Yesterday I got a call that QVS stopped working. I learned the administrator made the Server a back-up domain controller. My question is if I have him demote the server, will QVS then run or will I need to re-install? I would like to run QVS on the current machine and avoid the security set-up time involved in all of the documents.