FTP 120 Service Ready Soon vs 450 File Action Not Taken
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 450 (File Action Not Taken) is a 4xx Transient Negative response. 120 indicates that the service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly. 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.
Descrição
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
Quando você o vê
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
Como corrigir
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
Descrição
Requested file action not taken. The file is unavailable due to being busy, locked by another process, or temporarily inaccessible.
Quando você o vê
When you try to access a file that is locked by another user or process, or when the server temporarily cannot process the file.
Como corrigir
Wait and retry the operation — the file may be locked by another transfer. If persistent, check server-side file locks and permissions.
Diferenças principais
120 is a 1xx Positive Preliminary response, while 450 is a 4xx Transient Negative response.
FTP 120: The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
FTP 450: Requested file action not taken. The file is unavailable due to being busy, locked by another process, or temporarily inaccessible.
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
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.
Quando usar qual
For 120 (Service Ready Soon): Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator. 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.