In order to resolve the "Account Authorization Error 1013" issue in Throne and Liberty, you need to do a few things: first, restart the game; second, check the internet connection; and third, make sure that your NC account is logged in properly. Moreover, cache clearing, game file verification, or even launcher reinstallation could be possible solutions as well. If the problem is still there, it is advisable to either wait for the server to be stable or to reach out to the support team, since the error is often caused by the server being down.