@dkocher commented

Contact your hosting service provider to change your password. You cannot do this from within Cyberduck. Once the password has changed, the login prompt will appear.

0aeef3d commented

I'm having "this same" problem, too... and not the 'easy reject / close' problem of changing my password on my hosting server. Where / how does one change the password Cyb.D uses to log in, e.g. via FTP,to a server ?? I don't see anything stored for Cyberduck in my keychain utility. 'Edit' of a bookmark and edit of a history item - neither provide any opportunity to associate or change a password for an FTP account to the correct one that works which is stored on the hosting server. Somewhere, Cyb.D has squirrelled away a password for my non-anonymous FTP login. I'm not being challenged for the password interactively when I try to establish an FTP connection.. it just fails and I know why.. the password Cyb.D has squirrelled away is wrong and I can't find how to change it.