Earlier i was not able to launch Dolby Access on my Windows 11 Laptop. I tried almost everything. However, nothing worked! so i found a Microsoft Community link and it really helped me.
First, we need to open Powershell with Administrator privileges, and execute the following commands:
Set-ExecutionPolicy Unrestricted
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
Original Link: https://answers.microsoft.com/en-us/windows/forum/all/dolby-access-app-wont-start/2318737e-12fa-4560-9cf1-3c905dfeda67