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 checked the access (ls -l) and it is -rw-r--r--. But when I attempt to connect to the FTP folder I get: "The remote server returned an error: (553) File name not allowed" back from the server. The research I have done says that this may arrise from a permissions issue but as I have said I have permissions to view the file and can run ls from the folder. What other reasons could cause this issue and is there a way to connect to the folder without having to specify a file?

            byte[] buffer;
            Stream reqStream;
            FileStream stream;
            FtpWebResponse response;
            FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(new Uri(string.Format("ftp://{0}/{1}", SRV, DIR)));
            request.Method = WebRequestMethods.Ftp.UploadFile;
            request.Credentials = new NetworkCredential(UID, PASS);
            request.UseBinary = true;
            request.Timeout = 60000 * 2;
            for (int fl = 0; fl < files.Length; fl++)
            {
                request.KeepAlive = (files.Length != fl);
                stream = File.OpenRead(Path.Combine(dir, files[fl]));
                reqStream = request.GetRequestStream();
                buffer = new byte[4096 * 2];
                int nRead = 0;
                while ((nRead = stream.Read(buffer, 0, buffer.Length)) != 0)
                {
                    reqStream.Write(buffer, 0, nRead);
                }
                stream.Close();
                reqStream.Close();

                response = (FtpWebResponse)request.GetResponse();
                response.Close();
            }

Did you check the permissions of the folder you wanted to put the file into? Are you connecting as the owner of that folder? — Steve Czetty, Feb 23 '12 at 17:54

score 35 · Answer 1 · answered Jul 27 '12 at 15:20

35

Although replying to an old post just thought it might help someone.

When you create your ftp url make sure you are not including the default directory for that login.

for example this was the path which I was specifying and i was getting the exception 553 FileName not allowed exception

ftp://myftpip/gold/central_p2/inbound/article_list/jobs/abc.txt

The login which i used had the default directory gold/central_p2.so the supplied url became invalid as it was trying to locate the whole path in the default directory.I amended my url string accordingly and was able to get rid of the exception.

my amended url looked like

ftp://myftpip/inbound/article_list/jobs/abc.txt

Thanks,

Sab

answered Jul 27 '12 at 15:20

user1131926

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Holy crap! I feel like sending you flowers for this! – Forty-Two Feb 27 '13 at 14:34
4

Just to add something: if you still want to use an absolute path (I prefer that, since sometimes I login using a different user and a relative path won't work), you can put two "//" after the host. Like ftp://myftpip//gold/central_p2/inbound/article_list/jobs/abc.txt – YuviDroid Mar 11 '13 at 08:57
How do I find out which is the default directory ? – Steam Dec 31 '13 at 22:48
Alleluia! This is a glorious solution to what was a most cryptic and frustrating error. You are the (man|woman)! – Ifedi Okonkwo Jun 12 '16 at 12:20

score 7 · Answer 2 · answered Mar 04 '13 at 11:24

This may help for Linux FTP server.

So, Linux FTP servers unlike IIS don't have common FTP root directory. Instead, when you log on to FTP server under some user's credentials, this user's root directory is used. So FTP directory hierarchy starts from /root/ for root user and from /home/username for others.

So, if you need to query a file not relative to user account home directory, but relative to file system root, add an extra / after server name. Resulting URL will look like:

ftp://servername.net//var/lalala

This saved me in a PowerShell script that had to drop a file via FTP to SAP. — Tony, Aug 16 '18 at 19:57

score 2 · Answer 3 · answered Nov 13 '13 at 14:34

You must be careful with names and paths:

 string FTP_Server = @"ftp://ftp.computersoft.com//JohnSmith/";
 string myFile="text1.txt";
 string myDir=@"D:/Texts/Temp/";

if you are sending to ftp.computersoft.com/JohnSmith a file caled text1.txt located at d:/texts/temp

then

    FtpWebRequest request = (FtpWebRequest)WebRequest.Create(FTP_Server+myFile);
    request.Method = WebRequestMethods.Ftp.UploadFile;                      

    request.Credentials = new NetworkCredential(FTP_User, FTP_Password);    

    StreamReader sourceStream = new StreamReader(TempDir+myFile);                  
    byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
    sourceStream.Close();

    Stream requestStream = request.GetRequestStream();
    requestStream.Write(fileContents, 0, fileContents.Length);              
    requestStream.Close();

notice that at one moment you use as destination

ftp://ftp.computersoft.com//JohnSmith/text1.txt

which contains not only directory but the new file name at FTP server as well (which in general can be different than the name of file on you hard drive)

and at other place you use as source

D:/Texts/Temp/text1.txt

score 2 · Answer 4 · edited Jul 28 '14 at 07:23

2

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())
{

}

edited Jul 28 '14 at 07:23

VMAtm

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answered Jul 28 '14 at 07:05

aliastitan

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Not sure what was wrong, It was working all these days and suddenly was getting 553 error, I just deleted and re-created the folders and it started to work again. – Nuthan Gowda Dec 03 '16 at 23:40

score 1 · Answer 5 · answered Aug 24 '18 at 10:47

I hope this will be helpful for someone

if you are using LINUX server, replace your request path from

FtpWebRequest req= (FtpWebRequest)WebRequest.Create(@"ftp://yourdomain.com//yourpath/" + filename);

to

FtpWebRequest req= (FtpWebRequest)WebRequest.Create(@"ftp://yourdomain.com//public_html/folderpath/" + filename);

the folder path is how you see in the server(ex: cpanel)

score 1 · Answer 6 · answered Feb 23 '12 at 18:14

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.

answered Feb 23 '12 at 18:14

Fen

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This is not using AD. It is a simple username and password on a UNIX FTP server. But for Kicks I tried to enter the domain and I received a loggin error so that is not the issue but thanks for the input. – NomadicDeveloper Feb 23 '12 at 20:31

score 0 · Answer 7 · answered Jan 01 '15 at 08:36

Although it's an older post I thought it would be good to share my experience. I came faced the same problem however I solved it myself. The main 2 reasons of this problem is Error in path (if your permissions are correct) happens when your ftp path is wrong. Without seeing your path it is impossible to say what's wrong but one must remember the things a. Unlike browser FTP doesn't accept some special characters like ~ b. If you have several user accounts under same IP, do not include username or the word "home" in path c. Don't forget to include "public_html" in the path (normally you need to access the contents of public_html only) otherwise you may end up in a bottomless pit

score 0 · Answer 8 · answered Mar 02 '17 at 05:14

0

Another reason for this error could be that the FTP server is case sensitive. That took me good while to figure out.

answered Mar 02 '17 at 05:14

Evan Barke

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1
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score 0 · Answer 9 · answered Mar 22 '18 at 01:56

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.

score 0 · Answer 10 · answered Dec 26 '19 at 21:10

0

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.

answered Dec 26 '19 at 21:10

Jeffrey Roy

1

score 0 · Answer 11 · answered Jan 28 '21 at 09:57

0

Check disk space on the remote server first. I had the same issue and found out it was because the remote server i was attempting to upload files to had run out of disk space on the partition or filessytem.

answered Jan 28 '21 at 09:57

Checkiablue

1

score 0 · Answer 12 · edited Jun 21 '21 at 14:49

To whom it concerns...

I've been stuck for a long time with this problem. I tried to upload a file onto my web server like that:

Say that my domain is www.mydomain.com.
I wanted to upload to a subdomain which is order.mydomain.com, so I've used:

FtpWebRequest ftpReq = (FtpWebRequest)WebRequest.Create($@"ftp://order.mydomain.com//uploads/{FileName}");

After many tries and getting this 553 error, I found out that I must make the FTP request refer to the main domain not the sub domain and to include the subdomain as a subfolder (which is normally created when creating subdomains).
As I've created my subdomain subfolder out of the public_html (at the root), so I've changed the FTP Request to:

FtpWebRequest ftpReq = (FtpWebRequest)WebRequest.Create($@"ftp://www.mydomain.com//order.mydomain.com//uploads/{FileName}");

And it finally worked.

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

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