PowerDVD users cannot play any Ultra HD Blu-ray (UHD-BD) formatted video on systems using Intel's Software Guard Extensions (SGX). This issue occurred on all versions of PowerDVD on August 17, 2019.
Intel recommends you do not use SGX on Intel Comet Lake and Rocket Lake platforms, as Intel no longer supports that product.
Cyberlink advised that Intel has removed SGX support and that the UHD-BD format is no longer supportable.
PowerDVD versions 18 and 19 are the current products and they will not be updated for UHD-BD function removal. UHD-BD playback is a hardware-dependent feature. As it depends on whether SGX is presented. If the hardware or SGX is not supported, then the feature will not work.
(Figure.1 Supported formats)
This is a known issue that Intel and Cyberlink acknowledge impacting PowerDVD for the UHD-BD format. This issue occurs on any computers which uses PowerDVD and has the affected hardware profile.
If you have a system that uses the Comet or Rocket Lake platform or uses the Intel SGX hardware, PowerDVD will not run any UHD-BD videos. This is the software working as designed.