Forza Horizon 5 Message Board  

First off, I am not trying to get the trainer to be updated. I know it is retired. I wanted to provide an update as to the status of things.

This trainer was still working up until the latest update. With the latest update in place, the game will not launch with Aurora running, it starts then closes to desktop. If you let the game open, go through all the menus to the point where you are driving around, then tab out and attempt to open the trainer, the game will freeze then close to the desktop.

It appears M$ has decided to write a script in the service for the game which looks specifically for Aurora and if it is detected as running will immediately crash the game to the desktop. The trainer script for the game doesn't even have to be loaded, only Aurora running. There does not appear to be a way around this. The trainer is officially unusable.