I found this in the forum:
Update the Duplicati.GUI.TrayIcon.exe shortcut in your Startup folder to “Run this program as an administrator” (under the Compatibility tab of Properties)
Interesting… I had heard that method worked although I never used it myself.
Personally I use the Task Scheduler approach: set up a task to run the tray icon process elevated and set the trigger to be when you log in. Don’t forget to remove the icon from your startup group.
I wonder if that was tested? The intro that I see above it sounds like it was a bit of a guess. Running as Administrator from Startup shortcut? from Windows 10 Forums says it will fail.
I didn’t have any luck with it, on either an Administrator or a Standard User account at login.