While restoring a VM to a VMware host, the VM restores successfully, but you receive the warning 'One or more network adapters could not be added to the VM' as shown below:


This warning is caused when a VM has a virtual Ethernet card that connects to a distributed virtual switch port of type 'DistributedVirtualSwitchPortConnection'

More information here:


In this case the restore is still a fully successful one, however it will leave out the Virtual NIC. You will simply need to create the Virtual NIC manually from vSphere after the Altaro Restore completes.