"Why does Firefox automatically download the files instead of asking me if I want to open it or save it?"
Every time I go to download a file, it automatically saves it instead of asking me
This happened
Every time Firefox opened
== A couple days ago
Every time I go to download a file, it automatically saves it instead of asking me
== This happened ==
Every time Firefox opened
== A couple days ago
ప్రత్యుత్తరాలన్నీ (1)
It depends on the file type. You can set it in the Applications panel. See Manage file types and download actions in Firefox