Restores to the virtual failover client (VFC) fail if the configuration of the original client has been changed (for example, a disk has been added or removed). After the client’s configuration has changed, the next virtual restore to the VFC for the client fails, the status of the VFC becomes Invalid, and it remains in a Halted state until you delete it from the appliance. To resolve this problem, you must delete the VFC (see Deleting a virtual failover client) and create a new one (see Setting up a virtual failover client).