In the 'Triggers' tab, add new one for 'At log on' with 'Specific user' set to your own. Uncheck everything in Conditions tab unless you want things like only starting on AC power. Uncheck everything on the Settings tab except maybe 'Allow task to be run on demand' (to allow you to test it). Select 'Run only when user is logged on'. The important options you need: 'Change User' to your own.
Part 2: If you want to start as admin on logon without the UAC elevation prompt, use the Task Scheduler. In the shortcut Properties, ensure the Target ends in this 'Update.exe -processStart Discord.exe', set the 'Start in' field to empty, and go to Advanced button (near bottom right) and check 'Run as Administrator'. Don't use the Compatibility Tab because that can mess up updates or, at least, the installer.
Part 1: Create a second shortcut (named e.g.
Here are some workarounds that may be of use to someone:
