4K UHD Blu-ray Playback on PC Desktop is officially dead in 2021?

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Yes so far Apple and AMD CPU’s are not supported for 4K Ultra HD Blu-ray playback since no SGX security technology. One has to own a certain brand and model of motherboard that supports SGX in the BIOS and a compatible INTEL CPU with SGX security technology. Then one also needs to use Windows 10 with PowerDVD Ultra version 17, 18, 19, or 20. However at this time only HDR10 is supported with PowerDVD Ultra. Dolby Vision HDR and HDR10+ is not supported.

Until the BDA comes out with a software solution for SGX, less then 1% of the population that owns a Windows 10 PC can playback native 4K Ultra HD Blu-ray discs. Buying a standalone Sony or Panasonic 4K Blu-ray player is the best way to watch 4K Ultra HD optical discs.