Passing though HBA card in hyperV causes VM to not boot

thomas steel 1 Reputation point

Hi all
Im trying to pass though a HBA card for a tape drive to a VM
I have found instructions online on how to do it

(plus other tutorials with the same steps)
and I have from what I can tell, successfully added the card to the VM

However when I go to boot the VM I get an error saying
"The VM failed to start as that virtual machine has one or more devices assigned to it"

What does this error mean?
I know its got a device assigned to it, I just did it, but why does it stop the machine from booting?

I looked in the error logs and found ID 19560 but that doesnt show anything on google.
If I remove the card using the instructions, then the machine boots fine

Any ideas on whats going on?

Running server 2019 on both the host and the VM
Many thanks

A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single server.
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  1. essjae 251 Reputation points

  2. Xiaowei He 9,876 Reputation points


    Please check the Hyper-V log in Event viewer, Event viewer>Applications and Services Logs>Microsoft>Windows>Hyper-V-VMMS and Hyper-V-VMWorker, check if there's any detailed information about the issue.

    Thanks for your time!
    Best Regards,


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