Hi Kell_hound,
Thanks for your post in Microsoft Community.
I understand that you have encountered the problem that edge cannot play Netflix 4K video.
Netflix 4K video playback requires the hardware acceleration function of edge to be turned on.
Settings - System and Performance - Use Hardware Acceleration
Then enter edge://flags in the URL bar and open,
Find PlayReady DRM for Windows 10 and select Enable.
Restart edge to see if it works.
If you still can't view 4K video after turning on hardware acceleration and PlayReady DRM for Windows 10, it is recommended to provide feedback in edge.
Options - Help and Feedback - Send Feedback
Please feel free to let me know how it goes.
Kirk | Microsoft Community Support Specialist
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