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Home > Success Center > Serv-U Managed File Transfer & Serv-U FTP Server > 331 FTP response code

331 FTP response code

Updated May 3, 2017


This article explains why the 331 FTP response code is sent.


All Serv-U versions


A 331 code is sent in response to the USER command when a password is required for the login to continue. It is considered as a positive intermediate response and the client should immediately respond with a PASS command.

Example response

331 User name okay, need password.

Possible command



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