Please attach a screenshot or post the log of your miner, your post is too vague.
If I were to guess, though, your miner probably needs the login details to a mining pool. If you haven't signed up for one yet, look around for a good one with good reputation for whatever cryptocurrency you're planning to mine. Solo mining is also possible (in which case you'll have to supply your *coin client's RPC login details to your miner) - but this is almost never a good idea as the chances you'll find a block on your own are extremely slim in almost all cases.