The interviewer generally doesn't need to explicitly tell the interviewee what went wrong (and yes there are possible legal implications if you do). As an inte

The interviewer generally doesn't need to explicitly tell the interviewee what went wrong (and yes there are possible legal implications if you do). As an interviewee if you are unable to answer technical questions (and unable to work through to the answer without being told the solution) then it should be obvious what you need to work on. If the interviewer asks a question that you stumble on or give a vague answer to then that should also be flagging something to work on. Of course you can seem to nail the interview and get no-where but in that case you're being rejected for something out of your control (another better candidate, internal politics) in which case you have a good chance at your next interview. Or you are delusional about your own skills and experience, not sure what to do there though!