Steps to allow app loopback access in Windows 10/11. This is required for apps like Emby Theater on the same system as Emby Server.
1. You need to get the appid/packagefamily name.
open Powershell and get list of apps. Type: Get-StartApps # For all applications
Or Type something like this Get-AppxPackage EmbyMedia*
2. Once you have the apppackageid you type: checknetisolation loopbackexempt -a -n="EmbyMedia.EmbyTheater_py25wab55fpaa" ensuring you hav