Problem with auto attack

[Noctura]

I don't know if this will be helpful but I don't auto attack a mob unless I:
1. Target mob
2. Walk up to mob
3. Active mode
4. Press the enter/confirm button while targeting mob in active mode and being in range. If I don't I stand there not hitting anything >.<
The action bar kinda lights up a sec and it starts auto-attacking after i press the enter button.

Do you press anything else or just walk up to the mob with weapons out and it targeted? Sorry if you already knew this. ^^; Just wanted to help. I hope you can get it to work.
Good luck.