When Symantec Antivirus Corporate Edition 10.1.5.5000 was installed on our server it was configured to check a parent server for updates. This parent server no longer exists. We would like to change the configuration so that AntiVirus uses live update to automatically get virus deffinition updates from Symantec. We only have one server that is protected, so the update server doesn't seem to make much sense. Right now the Live Update button is disables and there is a "lock" icon beside it. How can we make this change?