Windows 11 Common KVM processor Not Supported

[ggonzalezflb]

My Windows 11 22H2 host is running on an HP Proliant DL360 Gen10 with Intel Xeon Bronze 3104 CPU, which is supported on Windows 11. On promox 8.3.2 I defined VM with pc-q35-7.1 machine and host processor, also I have tried with kvm64, qemu64, x86-64-v4 processors. But until now I can't make windows 11 upgrade to 23H2 because it says "Common KVM processor is not compatible". Can you help me with this?

 

[mariol]

Hello and welcome to the Proxmox Community

The topic is already being discussed here.

 

[ggonzalezflb]

Thanks Mario, but I already use "host" processor and Windows 11 22H2 is saying that is not supported. Now I try with Skylake-V4 (1st generation Xeon Scalable server processors) and the same result.

Here is my VM configuration file:
agent: 1
bios: ovmf
boot: order=scsi0;ide2;net0;ide0
cores: 4
cpu: host
efidisk0: local-lvm:vm-102-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
ide0: local:iso/virtio-win-0.1.225.iso,media=cdrom,size=519590K
ide2: local:iso/Win11_22H2_Spanish_x64v1.iso,media=cdrom,size=5438322K
machine: pc-q35-7.1
memory: 8192
meta: creation-qemu=7.1.0,ctime=1672607625
name: Acopan
net0: virtio=6E:32:0F:9B:A7:AF,bridge=vmbr3,firewall=1
numa: 0
onboot: 1
ostype: win11
scsi0: local-lvm:vm-102-disk-1,size=500G
scsihw: virtio-scsi-pci
smbios1: uuid=eb4c61f9-f67a-4c22-8898-dd5d2c28d2ef
sockets: 1
startup: order=3
tpmstate0: local-lvm:vm-102-disk-2,size=4M,version=v2.0
vmgenid: f1bbc659-f256-40d9-aa5e-e0fbbef775a9

Regards
Guillermo

 

[mariol]

Have you ever tested the VirtIO drivers in version 266?

T

Post in thread 'Cannot update windows 11 to 24H2 - CPU not supported'

Dec 29, 2024

Hi,


Even `host` CPU type didn't help? If yes, I would check if the VirtIO have an update.

Update virtio-drivers to v266 worked for me.

• TErxleben

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