Hi,
here I have a new install of Proxmox:
Kernel Version Linux 5.13.19-3-pve #1 SMP PVE 5.13.19-7 (Thu, 20 Jan 2022 16:37:56 +0100)
PVE Manager Version pve-manager/7.1-10/6ddebafe
I setup a VM to install Windows 10 in UEFI mode:
agent: 1
bios: ovmf
boot: order=ide0;scsi1
cores: 8
cpu: IvyBridge...