ftp 550 error in firefox, but IE works

Elaine_Shi used Ask the Experts™
I can access my ftp server on windows 2003 through IE with no problem at all. But one customer tried to upload a file through firefox, and she got 550 error in firefox.
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FTP Error 550 is a message from the server stating that the account you have currently logged in as does not have permission to perform the action you are attempting.

Probably Firefox has not authenticated to the IIS FTP server properly.

To connect to a FTP server requiring a username with Firefox,
1. Open Firefox
2. In the locator bar, type ftp://username: password@ftp.xyz.com

For example, if my User name was jess12 and my password was bosox67, the FTP browser syntax would be:

ftp://jess12: bosox67@ftp.xyz.com

In some cases, the User name includes a domain name such as jess12@xyz.com.

In these situations, you would type:

ftp:// jess12@xyz.com: bosox67@ftp.xyz.com

To connect to a FTP server with a User name with IE 6,
1. Open Internet Explorer

2. In the address bar, type the ftp address such as ftp://ftp.xyz.com

3. Dismiss any error dialogs if needed.

4. From the File menu, select Login As

5. In the Log On As dialog, type your username and password.

6. Click Log On.

If you plan on connecting to FTP servers on a regular basis , I would suggest getting a good FTP client. They make the task of uploading or moving files much easier than a web browser. But for the occasional FTP connection, your web browser will work fine.



If you  still get the error message you could enable NTLM Authentication in Firefox, see the following website

Enabling NTLM Authentication (Single Sign-On) in Firefox


I setup a virtual directory called customer under ftp root. I want this customer can only access to this sub folder and he should not be able to browser up to the parent folder. So I setup a user and set the security that this user can only access that sub folder but not the parent folder.

So the ftp side url is ftp://ftp.abc.com/customer
user name: customer
password: password

I tested in IE, it's working fine.
but the user called me and he only has firefox.
I use some other user who has the access rights to the parent folder, I can get in. but if I use this user which suppose to have rights to only access to this folder, I can not.

How do you setup user in ADUC to limit the user rights? for example, all domain user has rights to parent folder, if I create a new user, it's still a domain user. so it will has parent folder access rights as well. How do I limit it's access to parent folder?


it only works on IE but not Firefox.

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