TV volume control via Xbox Series X

the xbox does not support cec or hdmi control, you would need to go to tv setting on the xbox and setup tv control again as it may have lost the code, the xbox controls tv's via infrared only.

I have this same issue, I just got my Xbox One X, and set up the Xbox to control my TV as well, and the Xbox says it recognizes my TV and is controlling it, and will turn itit onon and off, but when it comes to controlling the volume nothing will happen.

when I had the XBox One I was able to control my tv though Xbox one, but now I have the series x and I cant control my tv though my series x?

I have a Vizio soundbar connected to my TV. I ran the Audio Receiver Setup on the Xbox One and now the X1 powers on/off the soundbar along with my entire TV/DVR system.

As for volume control, if you've ran the Audio Receiver Setup then you can control the Soundbar via either voice commands or the Xbox One Smartglass App (the volume controls on Smartglass will no longer control the TV volume, however, as they'll become dedicated
to the soundbar--I presume the same may be me true for voice commands).

Hi ZoltánBalázs2,

That is still not possible because volume control is only specific to the audio output device (speakers). You control volume only through the TV or any external audio device with speakers. The only exception to this would be volume control for headsets that
don't have the volume control built in. In this case if you plug in a headset to the Xbox One controller via the 3.5mm jack, then volume is controlled by a slider found in the Xbox Accessories app when looking at the controller's settings.

In conclusion, the Xbox One console is not responsible for the volume of the audio output as that is handled by the audio output device itself. The Xbox One just processes the audio formats to whatever you have set it to in the Audio output settings and
then the audio travels to your audio output device, which is what has the volume control. Therefore, as far as volume control goes, the Xbox One Media Remote is only able to control the volume on your TV that you have set up with your Xbox One under the TV
& OneGuide settings and then in "Device Control".

As mentioned previously, please refer back to that support article on what the remote is used for.

My controller stop working too series x , factory controller . Last night working and today my samsung tv remote control my xbox and the xbox controller no longuer view by the xbox , i use another controller from my other xbox seris s , and this controller work but not the one work last night , i try the little button to match xbox with but nothing , the controller do no longuer view on my xbox series x , can control de series s but can't be view or connect to the series x anymore