Your X server isn't listening. Run export DISPLAY=:0 in WSL and ensure VcXsrv is running with "Disable access control".
You already have commercial giants like AmpliTube, Guitar Rig, and Neural DSP. Why go through the hassle of open-source software? guitarix windows
The short answer is of the main Guitarix application. Historically, Guitarix was built specifically for the Linux JACK Audio Connection Kit, making a direct port difficult. Your X server isn't listening
For those who want a true native .exe , you must compile Guitarix from source using MSYS2 (a Unix-like environment for Windows). This is not for beginners. Why go through the hassle of open-source software
Here is everything you need to know to get Guitarix roaring on Windows 10 and 11.
The WSLg method has transformed Guitarix from an impossible dream into a daily driver. For the first time, Windows users can experience the raw, unfiltered dynamics of a tube amp simulation that costs absolutely nothing but a few hours of configuration.