[2023] Paradox Launcher not installing

Here's our go-to for launcher issues:

(In Windows) go to settings, add/remove programs, and uninstall ""Paradox Launcher v2"". Restart Steam, and then relaunch Stellaris.
If that doesn't work, open a Ticket with Customer Support here: https://support.paradoxplaza.com/ (Click open ticket in the top right corner)