Steam Guard App Code:

[Ben]

Hi my bot is at a pretty stable state where i can leave it running over night. But sometimes i see "Steam Guard App Code: ". Everything works fine but i am still curiouse to know why and when the happens.

[Dr. McKay]

That happens because Steam is going down or otherwise disconnecting you, and when the account automatically logs back on, the session resumption key is rejected and it prompts for a Steam Guard code. To suppress this prompt and provide a code programmatically, handle the steamGuard event.