FTP 200 Command OK vs 530 Not Logged In
FTP 200 (Command OK) is a 2xx Positive Completion response, while 530 (Not Logged In) is a 5xx Permanent Negative response. 200 indicates that the command has been successfully executed. This is a general acknowledgment that the command was understood and carried out. In contrast, 530 means that not logged in. The user is not authenticated and must log in before the requested command can be executed.
説明
The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
このコードが表示される場合
After issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
解決方法
No fix needed — the command succeeded. This is the standard positive response for commands that don't return data.
説明
Not logged in. The user is not authenticated and must log in before the requested command can be executed.
このコードが表示される場合
When you try to access files or run commands before authenticating, or after providing incorrect login credentials.
解決方法
Send USER and PASS commands with valid credentials. If login fails repeatedly, verify the username, password, and check if the account is locked.
主な違い
200 is a 2xx Positive Completion response, while 530 is a 5xx Permanent Negative response.
FTP 200: The command has been successfully executed. This is a general acknowledgment that the command was understood and carried out.
FTP 530: Not logged in. The user is not authenticated and must log in before the requested command can be executed.
You encounter 200 when after issuing any command that completes successfully, such as TYPE, MODE, or NOOP.
You encounter 530 when when you try to access files or run commands before authenticating, or after providing incorrect login credentials.
どちらをいつ使うか
For 200 (Command OK): No fix needed — the command succeeded. This is the standard positive response for commands that don't return data. For 530 (Not Logged In): Send USER and PASS commands with valid credentials. If login fails repeatedly, verify the username, password, and check if the account is locked.