Intel has removed the SGX security feature from 11th generation processors and newer generations. The problem is that the feature is one of the requirements to play Ultra HD Blu-Ray discs on computer systems.
The Ultra HD Blu-Ray format, often referred to as 4K Ultra HD or 4K Blu-Ray, supports 4K UHD playback with a pixel resolution of 3840×2160.
One of the requirements for playing Ultra HD Blu-Ray discs on PC is that SGX is supported by the installed processor and the motherboard firmware. The Blu-Ray Disc Association has defined the DRM requirements for playing Ultra HD Blu-Ray discs. In addition to SGX, playback is protected by HDCP 2.2 and AACS 2.0, with some discs using AACS 2.1.
Intel Software Guard Extensions (SGX) “enables user-level as well as operating system code to define private regions of memory, called enclaves, whose contents are protected and cannot be read or written to by any process outside of the enclave itself, including processes running at higher privilege levels” according to Wikipedia.
Intel’s 11th and 12th generation Core desktop processor datasheets list the Intel Software Guard extensions as a deprecated technology.
PC users who use devices with 11th generation or newer Intel processors cannot play Ultra HD Blu-Ray discs on these devices due to the missing requirement.
Cyberlink, producer of popular DVD and Blu-Ray playback software, has posted an FAQ entry on its website which confirms the problem.
The removal of the SGX feature and its compatibility with the latest Windows operating systems and drivers has created a significant challenge for CyberLink to continue to support Ultra HD Blu-ray movie playback in our player software. So much so that it has been determined that it is no longer possible for CyberLink to support Ultra HD Blu-ray playback on new processors and the latest Windows platforms.
The company suggests users to stick with older Intel CPUs, 7th to 10th Gen Intel CPUs to be specific, as these support SGX function and ensure Ultra HD Blu-Ray discs can be played. on the device. Cyberlink further suggests users not to update their devices to the latest version of Windows, Windows 11, and not to update Intel drivers as these may remove the SGX functionality from the driver.
It’s probably best to back up the system and test driver updates to see if Ultra HD Blu-Ray playback is still supported.
Using Blu-Ray players, for example the newer consoles from Microsoft and Sony, provided editions with disc drives are purchased, or other Blu-Ray players that support the 4K standard, may still be used to play media.
Now you: are you affected by the change? (via Heise (German))