I want to update a live tile from a background task (and the lock screen badge, and show toast notifications). I’ve got code that works when the app is running, and it runs through to completion as a background task, but nothing happens to the live tile/toast/badge. I’m assuming that’s because I need to use the overload of TileUpdateManager.CreateTileUpdaterForApplication() that takes a string, but I don’t know where to find the string and/or what the format is.
Any ideas?
Package relative app identifier (PRAID)
Edit per comment: Have you tried the Application ID that you specify in the Manifest or the ID you use to create the Secondary Tile?