This transaction is unknown.
You might have used wrong transaction hash, or the transaction you're looking for hasn't yet propagated through the network. It can take a while for transactions to get to blockchain nodes.
Note, when transaction is first seen it can be just an unconfirmed transaction. Those transactions are not to be trusted yet, they are not part of the blockchain.
For more info check this page.
If you're sure you have the right transaction hash, you might want to refresh the page.
IS this normal? How long does it take for BTC to get there? Its been half hour and still the same.
I also have the same problem at this stage transaction has been confirmed 171 times but nothing is showing on Poloniex, have send them a ticket will have to sit and wait.The fund shows that it has been credited to my wallet in cold but not on the site or transaction history