Dolby Vision no longer works in Vudu app

The system supports Dolby Vision in certain streaming apps like Netflix, Disney +, and Vudu, but it's not yet supporting playback of 4k discs with Dolby Vision through the blu-ray app. Hopefully they will eventually patch an update to do so. But currently,
it does NOT.

I have XBOX series X VUDU Black screen issue ( app wont launch) since Late AUG 2021, there was an xbox update in OCTOBER introducing additional support and settings for Dolby vision and HDR and whatever that was made the VUDU app worked again, however it has been short lived as I have made a purchase on VUDU on 11/29 and now I get a black screen on xbox when launching, does this VUDU app not work with certain resolutions that fight tv and XBOX, it works on PS5 , it works through my SONY Television, I'm curious if the latest update that was pushed about a week ago has crippled the VUDU app again... any help or suggestions would be appreciated, so done with functionality not working with NEXT GEN tech, we can go to space but can't get an app to stream on a streaming device, very frustrated XBOX user....

Same story as many others here - Xbox Series X, all streaming apps except VUDU work fine. Home internet speed not the issue. Movie constantly pauses and buffers, tells me to downgrade. Got tired of waiting for whoever to fix this. Bought a ROKU Ultra with HDR10 and Dolby Vision (Best Buy currently sells for 69.99); works great!

You're welcome. I am constantly looking to see updates on when Microsoft will patch the Xbox's Blu-ray App to support Dolby Vision encoded 4K discs. I've become obsessed with how good Dolby Vision looks, for material that was originally filmed in the
Dolby Vision format. I found your question doing just that, and know there is confusion about it. You kinda have to be a audio/videophile to know for sure what works. I can't wait to watch my discs in Dolby Vision, but for now, since almost everything comes
with a digital copy, I stream my purchased movie library on Vudu so I can view them in Dolby Vision. It'll have to do for now... but I'm not happy about it. Netflix's support for Dolby Vision has been fantastic, but it's output on the Xbox is forced into an
"always on" display setting. Also, Atmos had been working well over Netflix on the Xbox, but for more than the last month, if you play content with Atmos on Netflix, it gives you an error. Simply won't play back. I dunno why this started happening, since
it used to work fine, but they will eventually iron it out to work again. Just thought I'd drop that heads up, too.

Of course the Blu-Ray disks I'm using are UHD and have Dolby Vision.

Dolby Vision is enabled on Xbox One X settings, TV HDMI ports are in Enhanced mode (4:4:4 4K/UHD HDR 60Hz), and the TV test (that can be found inside Xbox menu) returns all green ticks for my Xbox-to-TV connection.

As said, Dolby Vision works with all streaming apps... but not when playing Blu-Ray UHD Dolby Vision disks.