QlikView Management Service is the service that run the user interface for publisher and server. You can configure the server and also the publisher putting changes directly in the config files but the qmc is necessary for the qvpr as example. If this service not run, you will not be able to create tasks, administrate the server licenses and more. You need this service on running for administrations propose, is this fail i think your QVS will still work but i not sure if your reloads and distributions still runs. Just try .