FTP 215 System Type vs 450 File Action Not Taken
FTP 215 (System Type) is a 2xx Positive Completion response, while 450 (File Action Not Taken) is a 4xx Transient Negative response. 215 indicates that the NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server. In contrast, 450 means that requested file action not taken. The file is unavailable due to being busy, locked by another process, or temporarily inaccessible.
Description
The NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server.
Quand vous le voyez
After issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
Comment résoudre
No fix needed — use this information to adjust path separators and line endings for the server's OS type.
Description
Requested file action not taken. The file is unavailable due to being busy, locked by another process, or temporarily inaccessible.
Quand vous le voyez
When you try to access a file that is locked by another user or process, or when the server temporarily cannot process the file.
Comment résoudre
Wait and retry the operation — the file may be locked by another transfer. If persistent, check server-side file locks and permissions.
Différences clés
215 is a 2xx Positive Completion response, while 450 is a 4xx Transient Negative response.
FTP 215: The NAME system type, where NAME is an official system name from the list in the Assigned Numbers document. Reports the operating system of the server.
FTP 450: Requested file action not taken. The file is unavailable due to being busy, locked by another process, or temporarily inaccessible.
You encounter 215 when after issuing the SYST command. The server reports its operating system type, commonly 'UNIX Type: L8' or 'Windows_NT'.
You encounter 450 when when you try to access a file that is locked by another user or process, or when the server temporarily cannot process the file.
Quand utiliser lequel
For 215 (System Type): No fix needed — use this information to adjust path separators and line endings for the server's OS type. For 450 (File Action Not Taken): Wait and retry the operation — the file may be locked by another transfer. If persistent, check server-side file locks and permissions.