The Unreal Engine FN presents a failure behavior when starting up, remaining on the 0% screen indefinitely. In some cases, this situation can last for more than thirty minutes, causing the user to decide to restart the computer. Even waiting for an additional period of fifteen minutes, there is no guarantee that the problem will be solved.
In some cases, after the system restarts, the application runs normally. However, in other situations, even after the restart, the problem persists and the application is not launched. This behavior can generate a feeling of unpredictability and frustration for the user, as there is no clear explanation for the cause of the problem.