Can't connect to FTP: (553) File name not allowed

Question

I need to FTP a file to a directory. In .Net I have to use a file on the destination folder to create a connection so I manually put Blank.dat on the server using FTP. I che

Answer 1

I saw something similar to this a while back, it turned out to be the fact that I was trying to connect to an internal iis ftp server that was secured using Active Directory.

In my network credentials I was using new NetworkCredential(@"domain\user", "password"); and that was failing. Switching to new NetworkCredential("user", "password", "domain"); worked for me.

Answer 2

I had this problem when I tried to write to the FTP site's root directory pro grammatically. When I repeated the operation manually, the FTP automatically rerouted me to a sub-directory and completed the write operation. I then changed my code to prefix the target filename with the sub-directory and the operation was successful.

Answer 3

Mine was as simple as a file name collision. A previous file hadn't been sent to an archive folder so we tried to send it again. Got the 553 because it wouldn't overwrite the existing file.

Answer 4

your directory has access limit.
delete your directory and then create again with this code:

//create folder  
FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create("ftp://mpy1.vvs.ir/Subs/sub2");
request.Method = WebRequestMethods.Ftp.MakeDirectory;
request.Credentials = new NetworkCredential(username, password);
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = true ;
using (var resp = (FtpWebResponse)request.GetResponse())
{

}