I also get the same error (13).  However this was *after* I successfully created a VM using proxmox and then did a factory reset from the Synology web UI of the NAS running in the VM.   No matter what I did I always got the error, things I tried: * removing all configured disks from the VM. * removing all EFI disks from the VM. * removing the PCI passthough from the VM. * verified the MD5 of the file I downloaded was correct (using the handy HashTab tool on windows