Xbox One X not outputting Dolby Atmos to TV

I have the same problem on Xbox X and XBox One. I’m using the Denon AVR-X 2700H 7.2 channel Dolby Atmos receiver with the XBox X, and the Yamaha RXV-6A 7.2 channel Dolby Atmos receiver with the Xbox One. Both receivers were working normally outputting Atmos on Netflix until November 2022. Disney+ and Amazon Prime play Atmos content on both devices without issue, hence indicating that the problem is not with the 4K TV and 4K projector, nor receivers.

So after following up with the Dolby Access support team, apparently games aren't supported on home theater, only on headphones:

"Unfortunately, Games encoded with Dolby Atmos audio are not compatible with Dolby Atmos for Home Theater, as they are specifically configured for Dolby Atmos for Headphones. If the content you are experiencing is not compatible with the app you are
using, then audio will cease, or will simply output as regular stereo output.

To clarify, Dolby Atmos for Home Theater is included at no charge with any Dolby Atmos supported hardware, such as a receiver or Xbox One X, and is used to activate Dolby Atmos features via HDMI connection for a Dolby Atmos certified AVR, soundbar,
or TV."

"Unfortunately, the version of Dolby Atmos included with your Xbox is Dolby Atmos for Home Theater, which is not compliant with any gaming content."

It kind of strikes me as hard to believe, or that this won't be addressed, but that's what they're saying for now. That said, it still isn't working for me for Netflix content either, so I'm going continue troubleshooting with them and see what's doable
and what's not. Fingers crossed.

My Xbox One X is connected to my receiver. When I try to setup Atmos in the audio settings Xbox One X says that my receiver, Denon AVR-4300H, does not have Atmos capability. I am only allowed to choose DTS for the bitstream sound output. Atmos works fine
with my Samsung 4K player so I know it is an Xbox One X issue.

The Dolby App does not give any error until I try to view the demo videos where it flashes, "you are not viewing this video on Dolby Atmos." It plays the demo video on DTS instead.

***UPDATE***

I finally got Dolby Atmos to work!!! Under "Settings, Display & Sound, Volume, Setup TV & AV Control, Audio" I had to change the default "Stereo" setting to "Surround Sound." The Xbox One X had to reboot to accept/change the setting. Once it rebooted Dolby
Atmos was working. It is interesting that the main control will be under the volume settings instead of audio output. You would think the system will be smart enough to activate surround sound when you are choosing Dolby Atmos to bitstream.

Hopefully this "difficult to find" change of setting will work for others who are having Dolby Atmos issues.

Hi, do you have the Dolby Access App on your Xbox ?

https://news.xbox.com/en-us/2017/11/13/xbox-one-x-windows-sonic-dolby-atmos-feature/

I have my audio output settings on the Xbox set at HDMI with bitstream out and Dolby Atmos works fine.

Issue has been reported multiple times by many people as indicated in this and few other threads (reddit, xbox forums, etc). I myself have opened several tickets (currently have one ongoing now) on the issue and yet it still hasn't been resolved. I have also created help tickets with Dolby Access Support, and their responses continue to be that it is a Microsoft issue in how it is outputting Dolby Atmos. Summary of my issues is below:

- Bitstream audio out no longer an option in the HDMI output settings. In the November 2021 update on the Xbox Series X, the audio settings page was changed and unfortunately the option to output bitstream audio was removed. Despite the many issues this has caused, Microsoft still has not fixed the issue. Please bring back the bitstream/lossless output formats instead of forcing PCM only.

- Despite Dolby Atmos being selected as shown in the picture, the Xbox is outputting PCM 'multichannel audio' instead of Atmos (receiver display shown in lower portion of picture). This appears to be causing delays/hiccups in the HDMI handshake process as whatever PCM signal is being sent is not fully correct and the receiver bounces between seeing multichannel audio and dolby atmos until finally settling on multichannel audio. To my earlier comment, being able to pass true bitstream dolby atmos audio to the receiver should eliminate this issue.

- I have the Xbox Series X running to the AVR and then to the TV in order to have access to all the audio formats. When I tried to run the Xbox directly to the TV and then audio over eArc to the receiver, the Xbox will only output PCM Stereo, Dolby Digital or Dolby Atmos. I have tested the TV/receiver and they are able to pass other formats (such as DTS:X) over eArc so it is an Xbox issue of not allowing all the formats to be output (possibly related to bistream vs PCM also?).