Hi Christoph,

Are we talking about https://resources.ovirt.org/pub/ovirt-4.5/iso/ovirt-node-ng-installer/ovirt-node-ng-installer-latest-el8.iso ?
( https://resources.ovirt.org/pub/ovirt-4.5/iso/ovirt-node-ng-installer/4.5.2-2022081013/el8/ovirt-node-ng-installer-4.5.2-2022081013.el8.iso
Have you verified its checksum before uploading it to the data domain, to make sure that the file hasn't been corrupted during the download?

Also, what is the exact issue you're experiencing?

Thanks in advance,