@CaryS21UltraS24Ultra I just tried Dex on my S25 Ultra and Fold 6, both running UI 7, and successfully connected wirelessly to my Samsung TV.
As a troubleshooting step, you could boot into safe mode. If it works while booted in safe mode, the issue is caused by some 3rd party software conflict.
I got this update as well and DEX with PC stopped working. I get a message to use link to phone app from Windows. Link to phone app is a trash app. Try loading photos, keeps loading but never works. Try loading phone screen, never works. Try loading apps, never works. Nothing works with this app. Just allow the wired connection and it will be so much better. Samsung DEX was so much better. Or bring back Samsung SideSync which was even better than DEX. Microsoft is useless!! It keeps connecting on wireless which is extremely slow. Why not support the USB connection? Why login to a Microsoft account is necessary? Who told you that I want to connect my phone to Microsoft Account? Samsung is becoming trash day by day. Looks like Samsung has been bought by Microsoft.
I will like to remove the updated. I need my dex to work on my pc. The upgrade kills phone productivity. To be honest, this upgrade looks like a retrogression. Dex on pc was the most innovative app samsung had. In a competitive market with the rise of Chinese phones, I don't know whether this was a smart move.
