Hello,

Recently I've noticed that the onboard iGPU Intel UHD 630 no longer passes through to my Windows 11 VM correctly. When looking inside Device Manager I see error 43.

I've spent the past day trying to resolve this issue with no luck in getting it working.

Any help would be muchly appreciated!?

Thanks

IOMMU Groups

Hardware Info

HP 800 G5

Intel i5-9500 @ 3Ghz

RAM 32GB

VM xml File

<?xml version='1.0' encoding='UTF-8'?>

<domain type='kvm'>

<name>UNRAIDW11VM</name>

<uuid>2c8076e5-ba21-22c4-3053-9c037ad441fe</uuid>

<description>W11 VM</description>

<metadata>

<vmtemplate xmlns="http://unraid" name="Windows 11" icon="windows.png" os="windows11" webui="" iconold="windows.png"/>

</metadata>

<memory unit='KiB'>22544384</memory>

<currentMemory unit='KiB'>22544384</currentMemory>

<memoryBacking>

<nosharepages/>

<source type='memfd'/>

<access mode='shared'/>

</memoryBacking>

<vcpu placement='static'>6</vcpu>

<cputune>

<vcpupin vcpu='0' cpuset='0'/>

<vcpupin vcpu='1' cpuset='1'/>

<vcpupin vcpu='2' cpuset='2'/>

<vcpupin vcpu='3' cpuset='3'/>

<vcpupin vcpu='4' cpuset='4'/>

<vcpupin vcpu='5' cpuset='5'/>

</cputune>

<resource>

<partition>/machine</partition>

</resource>

<os>

<type arch='x86_64' machine='pc-i440fx-9.2'>hvm</type>

<loader readonly='yes' type='pflash' format='raw'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi-tpm.fd</loader>

<nvram format='raw'>/etc/libvirt/qemu/nvram/2c8076e5-ba21-22c4-3053-9c037ad441fe_VARS-pure-efi-tpm.fd</nvram>

</os>

<features>

<acpi/>

<apic/>

<hyperv mode='custom'>

<relaxed state='on'/>

<vapic state='on'/>

<spinlocks state='on' retries='8191'/>

<vpindex state='on'/>

<synic state='on'/>

<stimer state='on'/>

<vendor_id state='on' value='none'/>

</hyperv>

<kvm>

<hidden state='on'/>

</kvm>

<vmport state='off'/>

<ioapic driver='kvm'/>

</features>

<cpu mode='host-passthrough' check='none' migratable='off'>

<topology sockets='1' dies='1' clusters='1' cores='6' threads='1'/>

<cache mode='passthrough'/>

</cpu>

<clock offset='localtime'>

<timer name='hpet' present='no'/>

<timer name='hypervclock' present='yes'/>

</clock>

<on_poweroff>destroy</on_poweroff>

<on_reboot>restart</on_reboot>

<on_crash>restart</on_crash>

<devices>

<emulator>/usr/local/sbin/qemu</emulator>

<disk type='file' device='disk'>

<driver name='qemu' type='raw' cache='writeback' discard='ignore'/>

<source file='/mnt/disks/500gb-M2/UNRAID-W10-VM/UNRAID-W10-VM.img'/>

<target dev='hdc' bus='sata' rotation_rate='1'/>

<boot order='1'/>

<address type='drive' controller='0' bus='0' target='0' unit='2'/>

</disk>

<disk type='file' device='disk'>

<driver name='qemu' type='raw' cache='writeback' discard='ignore'/>

<source file='/mnt/disks/500gb-M2/WorkingDirectory/W10-VM-W-Drive.img'/>

<target dev='hdd' bus='sata' rotation_rate='1'/>

<address type='drive' controller='0' bus='0' target='0' unit='3'/>

</disk>

<disk type='file' device='cdrom'>

<driver name='qemu' type='raw'/>

<source file='/mnt/user/isos/Win11_24H2_EnglishInternational_x64.iso'/>

<target dev='hda' bus='ide'/>

<readonly/>

<boot order='2'/>

<address type='drive' controller='0' bus='0' target='0' unit='0'/>

</disk>

<disk type='file' device='cdrom'>

<driver name='qemu' type='raw'/>

<source file='/mnt/user/isos/virtio-win-0.1.285.iso'/>

<target dev='hdb' bus='ide'/>

<readonly/>

<address type='drive' controller='0' bus='0' target='0' unit='1'/>

</disk>

<controller type='pci' index='0' model='pci-root'/>

<controller type='pci' index='1' model='pci-bridge'>

<model name='pci-bridge'/>

<target chassisNr='1'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>

</controller>

<controller type='pci' index='2' model='pci-bridge'>

<model name='pci-bridge'/>

<target chassisNr='2'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>

</controller>

<controller type='pci' index='3' model='pci-bridge'>

<model name='pci-bridge'/>

<target chassisNr='3'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>

</controller>

<controller type='pci' index='4' model='pci-bridge'>

<model name='pci-bridge'/>

<target chassisNr='4'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>

</controller>

<controller type='pci' index='5' model='pci-bridge'>

<model name='pci-bridge'/>

<target chassisNr='5'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>

</controller>

<controller type='pci' index='6' model='pci-bridge'>

<model name='pci-bridge'/>

<target chassisNr='6'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>

</controller>

<controller type='pci' index='7' model='pci-bridge'>

<model name='pci-bridge'/>

<target chassisNr='7'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>

</controller>

<controller type='ide' index='0'>

<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>

</controller>

<controller type='sata' index='0'>

<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>

</controller>

<controller type='virtio-serial' index='0'>

<address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/>

</controller>

<controller type='usb' index='0' model='qemu-xhci' ports='15'>

<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>

</controller>

<interface type='bridge'>

<mac address='52:54:00:a7:27:7b'/>

<source bridge='br0'/>

<model type='virtio'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>

</interface>

<serial type='pty'>

<target type='isa-serial' port='0'>

<model name='isa-serial'/>

</target>

</serial>

<console type='pty'>

<target type='serial' port='0'/>

</console>

<channel type='unix'>

<target type='virtio' name='org.qemu.guest_agent.0'/>

<address type='virtio-serial' controller='0' bus='0' port='1'/>

</channel>

<input type='mouse' bus='ps2'/>

<input type='keyboard' bus='ps2'/>

<tpm model='tpm-tis'>

<backend type='emulator' version='2.0' persistent_state='yes'/>

</tpm>

<audio id='1' type='none'/>

<memballoon model='virtio'>

<address type='pci' domain='0x0000' bus='0x00' slot='0x0e' function='0x0'/>

</memballoon>

</devices>

<seclabel type='dynamic' model='dac' relabel='yes'/>

</domain>

I too have a similar problem. Still have. I think my VM crashed, and then the GPU was no longer passed through. Error 43. Did use SR-IOV plugin. Now passing through the whole integrated GPU. (UHD 730) Still error 43.

Google mentions Proxmox and troubble whereabouts. IDK where to go next.

On 1/16/2026 at 4:37 PM, Caddy said:

I too have a similar problem. Still have. I think my VM crashed, and then the GPU was no longer passed through. Error 43. Did use SR-IOV plugin. Now passing through the whole integrated GPU. (UHD 730) Still error 43.

Google mentions Proxmox and troubble whereabouts. IDK where to go next.

From what I researched it’s a problem with Windows 11, the operating system doesn’t like using the iGPU when the OS is Virtualised.

I decided to migrate away from W11 VM to unraid docker.

On 1/19/2026 at 9:24 PM, franco101 said:

From what I researched it’s a problem with Windows 11, the operating system doesn’t like using the iGPU when the OS is Virtualised.

I decided to migrate away from W11 VM to unraid docker.

Ow... OW... Yeah i think i remember installing windows 10. Not 11.

Well, all i need is run a android game. 24/7. VM Windows on my unraid was the perfect option. Untill now where it does not work optimally.

Now if i cant do that on a windows VM, whats my options? My daily powerhungry driver cant be on 24/7.

Did a reinstall of windows 10. Works like a charm again. Thanks a lot!

Edited January 21Jan 21 by Caddy