If the NVDB path is not correct, stop the NetVault Services (NetVault Configurator > Services tab), correct the path for the NVDB section and restart the NetVault Services again.
If this is a license key issue, then just re-install the NetVault Server license key on the NetVault Server as per the steps above.
You can now manage your license keys yourself by navigating to the following site; https://support.quest.com/my-account/licensing, register the Server License Number if it hasn't been registered, and manage licenses from the Retrieve Key tab
You can also request new keys or get licensing assistance from the following URL: