I'm using Windows 11 WSLg (installed using the Windows Subsystem for Linux Preview from the Microsoft Store) and the current WSL Ubuntu distribution from the Microsoft Store.
How can I launch xfce4 or another Ubuntu desktop?
Currently an apt install xfce4 followed by startxfce4 produces the errors cannot open display: wayland-0+Failed to connect to session manager and some other output.
With Windows 10 WSL2, I didn't hit any issues launching xfce4 after the VcXsrv client was installed and running on Windows. The latter, as I understand it, isn't supposed to be necessary with Windows 11 WSLg.
I can launch standalone x-windows apps like the xfce4-appfinder, thunar file manager, and terminal emulator without issues.