Xbox one x 4K not working

Are you trying in a game or playing video

Xbox one s only works on video for 4k

Xbox one x supports 4k gaming at 30fps

4k escalation in games only work for the Xbox one X as it's the one that supports it, the game is the same but there would be a notable difference between the S and X and also the TV has to do with it (4k, high dynamic range)

Although both the Xbox One S and the Xbox One X can both stream 4K, only the One X is capable of true 4K gaming. I would recommend the XBox One X over the XBox One S because it only one that can truly do 4K gaming! The XBox One S can upscale 1080p games
to 4K but isn’t a real 4K console, although it can play Blu-Ray in 4K. The XBox One X is the first console to truly be able to stream 4K gaming, plus it has a Ultra HD 4K Blu-ray player!

Yes, I currently own an X Box One X

When does the new X Box series X release this year?

Will it have blue-ray?

I have a 65 inch, 4K television.

Will I see a difference in graphics with the new X Box on my 4K?

Xbox Series X will release Holiday 2020, given Xbox's track record of releasing new consoles, they've usually been around November.

It will have Blu-Ray.

With the Xbox One X, it uses checkerboarding to get 4K resolution, though it's not true 4K, it's what allows the One X to get to 4K,

With the Xbox Series X, it will use true native 4K, you may see that the Series X will look a little better at 4K than the One X at 4K.

The Xbox One can't play games at 4K, You need to have the Xbox One X and a 4K TV or a 4K Monitor to get to play games at 4K and games that show Xbox One X Enhanced on them.