Tray icon won't launch after update

Actually that make sense due to these fixes

v2.1.0.109_canary_2025-02-11

Fixed multiple issues with TrayIcon state

and one of those was the --no-hosted-server case that’s being discussed.

v2.1.0.5_stable_2025-03-04

This is an update release to 2.1.0.4, fixing critical issues.

and maybe this issue wasn’t critical enough. In any case, it’s not in release note.

“Duplicati.GUI.TrayIcon.exe –no-hosted-server” not working

has a workaround for the --no-hosted-server setup that runs a Canary (so less trusted, but good enough for status and control) TrayIcon and the 2.1.0.5 service.