@stormi It was the time. It was not just a bit off, it was 12 years off

Should have thought of that, we had similar issues at work with Rocky 8 servers. I naively thought the NTP servers would have prevented such issues, but I am not sure the NIC works at install time. I have never been able to get the netinstall to work off that box. Meh... this worked, thanks you very much!

I have an atypical host, a Rock Pi X. I can install 8.2.1 fine, but 8.3 beta1 and beta1-test4 do not install. All fresh installs, I haven't tried upgrading 8.2 to 8.3.

They generate different errors (I assume test4 is just more specific).

Using xcp-ng-8.3.0-beta1.iso I get:
Error occured
An unrecoverable error has occured. The error was:
Error installing packages

Using xcp-ng-8.3.0-beta2-test4.iso:
Error occured
An unrecoverable error has occured. The error was:
Signature key import failed

Looking forward trying the official beta2 release to see if it fares better.

Anything I can test to try and pinpoint the source of the issue?

Thanks.