Have a number of 2008 and 2012 VMs running on a 2012 Hyper-V host.
If I restart any VM from within the guest OS, it will only restart if the HV manager service is currently running on the host.
So if the service is not running (i.e. most of the time) when a VM restarts due to eg. windows updates, it will not start up until someone logs in to the host and starts the manager service.
How can I set it up so that the VMs restart automatically?