HDR not working for apps but works for games

Nope. Still not working and I can't get a reply in 3 months. This is a bummer because I'd love to buy an Xbox One X, but if I can't get the S to work with my new TV, there is no way I am going to buy a new console. It's crazy. My Playstation HDR works
fine with my TV too.

My Netflix (in XboneS app) was working fine, then all of a sudden it stopped, now the whole TV just snows out. Amazon 4k HDR works, the Cast Netflix HDR works, but the XboneS Netflix HDR app in breaks my Vizio P65-C1

Nope. Still not working and I can't get a reply in 3 months. This is a bummer because I'd love to buy an Xbox One X, but if I can't get the S to work with my new TV, there is no way I am going to buy a new console. It's crazy. My Playstation HDR works
fine with my TV too.

My Netflix (in XboneS app) was working fine, then all of a sudden it stopped, now the whole TV just snows out. Amazon 4k HDR works, the Cast Netflix HDR works, but the XboneS Netflix HDR app in breaks my Vizio P65-C1

I am having a similar issue with my LG OLED 55C6P 4K HDR TV. Netflix will trigger my HDR on my TV, flicker or snow and then the TV will auto swap picture mode to standard, then HDR and on and on. All other HDR Apps and sources work 100%. It's making me crazy.
I've tried new cables, unplugging everything and rebooting each device involved and hard resets. Uninstalled Netflix and re-install, problem persists. No idea what is going on other than HDCP issues.

Same problem with the KDL-32WE613 My display has HDR and 10 bit output, works fine with Youtube and Netflix HDR content directly on the TV Apps and fine with
HDR games and HDR content on Netflix on my PS4 Pro, Xbox One S ticks HDR by default but says the TV does not support it even when it's forced on in with the HDR-Game or HDR-Cinema profiles.

I can verify this issue...Netflix UHD does not work on Xbox One S. I have a Vizio M55-D0 with the latest firmware enabling HD10 support. My TV is now recognized by the One S video settings as 4K HDR capable. I am able to enable HDR support and it works beautifully
with the Blu-Ray app (Mad Max 4K Blu Ray playing 4K, 24fps, HDR as verified by the Vizio settings app). However when I start Netflix, the screen flashes, colors mute, and video fails to switch to HDR or 24fps. Netflix app is clearly broken right now for HDR.
If I switch HDR off on the One S, Netflix app is fine, plays 4K correctly, colors are fine obviously no HDR.

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community.

Hello Vyper221, try to follow the procedures below.

The first is a clear cache

1. Go to the Xbox press and hold the XBOX power button on the console for 10 seconds until it turns off

2. Wait 10 seconds until it turns off

3. Wait 1 minute with it off

4. Turn it back on

Xbox One reset keeping Games:

Press the Xbox button to open the panel.

Select system > Settings > System > Console Information

Select Reset console.

Restore and maintain my games and apps.

Rest assured, you won't miss games or saves

Note: You need to know the email and passwords of your accounts when performing this reset.