Arduino leonardo problem


I am trying to understand how to work with the arduino leonardo.

I noticed that sometime it refuse to load the program. I don t understand how this can happen, is it because the reset software has perturbation when we are working with the keyboard library or a serial connection? (like key send in the same time than the reset), or can this happen even with a simple blink?

thank!!! :)

Please read: Specifically the re-enumeration on reset.

The above being said, some Windows installations can be more trouble than others. Thus is not the Arduino's fault but a design decision made long ago at Microsoft during the early days of Plug & Play development.