Passthrough error with gpu pci

I have created a virtual machine and configured passthrough, but I'm getting the following error when starting: "kvm: -device vfio-pci,host=0000:01:00.0,id=hostpci0.0,bus=pci.0,addr=0x10.0,multifunction=on: vfio 0000:01:00.0: failed to setup container for group 111: Failed to set iommu for container: Operation not permitted TASK ERROR: start failed: QEMU exited with code 1." I'm not sure what I might be doing wrong, and I would appreciate it if someone could help me. The system is a Windows...

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