New Windows 11 VM Fails Boot After Update

[tofi]

I fixed it thanks to some other infos here from the forums.

Solution for me:

vm.conf
args: -cpu host,hv_passthrough,level=30,-waitpkg
(remove "cpu:" info line)

set /sys/module/kvm/parameters/ignore_msrs to Y

• temporary

echo "Y" > /sys/module/kvm/parameters/ignore_msrs

• persistent

echo "options kvm ignore_msrs=1" >> /etc/modprobe.d/kvm.conf
modprobe -r kvm
modprobe kvm


Sources:
https://forum.proxmox.com/threads/w...n-windows-guest-on-13th-gen-intel-cpu.131950/
https://pve.proxmox.com/wiki/Nested_Virtualization#Troubleshooting

Thanks everyone

 

[Dallas.McGuireHindle@MIST]

i've just had this problem as well, based on previous posts I tried using "x86-64-v2-AES" as the CPU-type and this resolved it for my windows 11 workstation VM.

I'll try tofi's post above later to see if that also works for me. I'm not intending to use anything nested, but then again, I may need docker or WSL so....