FTP Reply Codes
FTP 331 — User name okay, need password
In FTP Reply Codes, code 331. The official source describes it as “User name okay, need password”. Its concrete cause depends on the operation and surrounding message.
Code331
Symbol—
Source confidencehigh
Official definition
User name okay, need password
In plain language
In FTP Reply Codes, code 331. The official source describes it as “User name okay, need password”. Its concrete cause depends on the operation and surrounding message.
Context to inspect
- The surrounding operation, version and subsystem determine the actual cause.
- The same numeric value can mean something different in another namespace.
Safe first checks
- Confirm which product, protocol or subsystem produced the code.
- Read the full surrounding error message and inspect relevant logs.
- Compare the code with the linked authoritative documentation before changing configuration.
Important context
The surrounding operation, version and subsystem determine the actual cause.