I assume by you mentioning 'task manager' you are using Windows (what version?).
Is there an icon in the task bar?
Are you or have you ever used multiple monitors (I am wondering if it is running but not on the main screen).
If you expand 'Archicad 22 component' in the task manager and then right click on the program and choose "switch to" - what happens.
Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11