Netlifx HDR doesn't work but HDCP is working and HEVC paid and installed

Question

Netlifx HDR doesn't work but HDCP is working and HEVC paid and installed

Milandouille 0

I have no longer 4K stream in netflix and hdr never worked.

I bought HEVC extension in windows but in edge://gpu HEVC - HDR10 support is still false

I have the right netflix plan (4K HDR), it works on my phone.

Netflix hdr used to work on chrome for a week then stopped

In netflix, it shows: 1920*1080 HDR Support: False (is-type-supported)

Youtube (av1) works in hdr in edge.

Screen: LG 32GX850A-B
GPU: RTX 3080ti connected through lg provided displayport cable

HDCP 2.3 support in Nvidia app

Tested on edge (and netflix app), edge dev, edge canary and edge beta, same results

HDR turned on in windows

Media Foundation Rendering Capabilities

=======================================

PlayReady Hardware DRM disabled: false

Direct Composition : true

Dolby Atmos support : false

AV1 installed : true

AV1 activable : true

AV1 version : AV1:2.0.7.0

HEVC installed : true

HEVC activable : true

HEVC version : HEVC:2.5.10.0

Display: : Scaled: [0,0 2560x1440] Scale: 1.50 Actual: [0,0 3840x2160]

GPU Index : GPU0

HEVC - Dolby Vision support : false

HEVC - HDR10 support : false

HDCP 2.2 support : true

HEVC - 4K support : true

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2 answers

Your answer

Answer 1

This is a classic PlayReady SL3000 secure path failure clashing with Display Stream Compression (DSC) or a corrupted UWP licensing token. YouTube AV1 HDR works because it bypasses hardware-level DRM entirely, relying solely on standard Media Foundation decoding. When edge://gpu explicitly flags HEVC - HDR10 support : false despite the HEVC codec being active and HDCP 2.3 showing true in the Nvidia app, the Chromium media pipeline is rejecting the DRM handshake. This almost always occurs because the GPU's secure enclave cannot validate the DisplayPort topology when DSC is active to push high resolutions at high refresh rates.

For a definitive native workaround to resolve Netflix PlayReady handshake failures, using the Windows Display Settings to drop the monitor's refresh rate or switching to a certified HDMI 2.1 connection will completely decouple the rendering process from the DisplayPort compression module.

To clear this bottleneck at the OS level:

Disable DSC via Refresh Rate: Go to Windows Settings > System > Display > Advanced display and temporarily lower your refresh rate to 60Hz. If DSC is active (which is mandatory on DisplayPort 1.4 to hit 4K at 144Hz+), PlayReady DRM will intentionally block 4K HDR video paths.

Flush the HEVC Licensing Token: Navigate to Windows Settings > Apps > Installed apps > HEVC Video Extensions > Advanced options. Click Repair, then Reset. This forces the OS to request a fresh, uncorrupted DRM license cache without needing complex registry modifications.

Force PlayReady Enforcement: Open Edge, type edge://flags/#edge-playready-drm-win10 in the address bar, and change the setting from Default to Enabled. Restart the browser.

Are you running that LG panel at its maximum overdrive refresh rate over that DisplayPort cable, and does the Nvidia Control Panel still maintain a green secure lock icon under "View HDCP status" when Windows HDR is toggled on?

Milandouille 0 Reputation points

2026-06-26T17:25:47.2033333+00:00

Thanks for the explanations. I've done everything you suggested (even the right hdmi cable). I don't have overdrive options on my monitor. And yes the HDCP status is green.
I think something from windows, to edge, to nvidia, to my monitor is broken. I hope updates will solve this.
Jobelle ann Candelaria 735 Reputation points Independent Advisor

2026-06-26T18:43:21.2833333+00:00

I really hope so, as well.

Answer 2

Jobelle ann Candelaria 735 Independent Advisor

Hi Milandouille,

Thanks for posting your question here. This happens because Netflix 4K/HDR requires correct DRM, display settings, and licensing. Please follow these fixes:

set display scaling to 100%, native resolution 3840×2160, 10‑bit RGB full range, and 60Hz
repair/reinstall the paid HEVC extension to refresh its license
confirm PlayReady Hardware DRM is active and protected content is allowed in Edge
check that your monitor is in PC mode with deep color enabled
test if using HDMI instead of DisplayPort resolves the DRM issue (YouTube HDR works because it uses AV1 without the same PlayReady restrictions, so only the software/DRM configuration needs adjustment.)

Let me know if you have questions, I am here to help.

Give back to the Community. Help the next person who has this issue by indicating if this reply solved your problem. Click Yes or No below.

Thanks,

Jobelle C.

Milandouille 0 Reputation points

2026-06-24T22:39:12.97+00:00

Hi,
Thank you for your answer.

I set scaling to 100%, the resolution, and the color range were already right, but I did change to 60hz.
I repaired the HEVC extension.
I used a playready test for 2.0 and 4.0 and it returned "ok".
The monitor doesn't have tv mode and it can output the full gamut in hdr.
I tested hdmi (HDCP compliant).

Unfortunately, despite the thoughtful advice, netflix was in 1080p and sdr and it still showed HEVC - HDR10 support : false.
The fact that I got hdr for a week on chrome then it stopped suddenly makes me lose my hair. I don't know where to find the issue. I will try to contact netflix to see if they have more to help me with.
Jobelle ann Candelaria 735 Reputation points Independent Advisor

2026-06-24T22:46:22.9233333+00:00

Since the issue still persists. Since it worked briefly before, something like a system update or license refresh likely disrupted the pipeline. To fix it, confirm your display is set to native resolution, 10‑bit RGB full range, and 60Hz, fully uninstall and reinstall the paid HEVC extension instead of just repairing it, verify PlayReady hardware DRM is enabled, double‑check that hardware‑accelerated GPU scheduling is active, and ensure protected content is allowed in your browser.

Thanks,

Jobelle C.
Milandouille 0 Reputation points

2026-06-24T23:06:46.19+00:00

Thanks,
I tried all of these. I'm gonna hope it will be fixed naturally with updates. I will reinstall the browsers to see if it changes anything.
Jobelle ann Candelaria 735 Reputation points Independent Advisor

2026-06-24T23:09:57.65+00:00

Understood. Reinstalling browsers is worth trying. Hope things work out for you!
Milandouille 0 Reputation points

2026-06-24T23:27:38.2466667+00:00

Reinstalling chrome did the trick but it didn't work for edge. I will have 1080p hdr, that's better than nothing.
If someone can help me with edge, I'd be grateful.
When uninstalling (completely deleting the program files) and reinstalling, I still have my bookmarks and info back. Is there a way to truly uninstall?
Jobelle ann Candelaria 735 Reputation points Independent Advisor

2026-06-24T23:45:42.16+00:00

That's very nice to know! For Edge, standard uninstall doesn’t fully remove everything because it’s built into Windows and keeps your profile, settings, and DRM data in hidden folders, that’s why your bookmarks and info come back. To do a true clean reset, first sign out and turn off sync, close all Edge processes, delete the folder at %localappdata%\Microsoft\Edge\User Data, uninstall Edge, restart your PC, then reinstall it fresh.
Milandouille 0 Reputation points

2026-06-24T23:47:44.3133333+00:00

Thanks
Jobelle ann Candelaria 735 Reputation points Independent Advisor

2026-06-24T23:54:43.12+00:00

You're welcome! Glad to know that things work out well!
Jobelle ann Candelaria 735 Reputation points Independent Advisor

2026-06-25T15:09:25.45+00:00

If you don't have any more concern, feel free to rate the thread and have a great day.