FTP Problem

All very strange, isn't it? Hard to see a clear pattern...

FYI, I tried two 3rd-party tools: FileZilla did not work; it was able to find and open the FTP site and send my login name. After receiving a "login name OK" message, it tried to send the password -- and that's when it failed because the password was not recognized. It's defined in FileZilla absolutely correctly, so dunno why this happens. This is likely the same place that connections from IE or Win Explorer are also failing?

Then I tried FTP Voyager as has been suggested earlier. Worked perfectly the first time, and no trouble since.

I was trying to access my FTP-server via Windows Explorer, but I always get the following error-message:

An error occurred opening that folder on the FTP Server. Make sure you have permission to access that folder.
Details:
The handle is invalid.

Since it is my own FTP-server, I know that my login-details are correct. It works fine in both Firefox and Internet Explorer, but not Windows Explorer. I've tried with login-names not containing any special characters, and has only lower-case letters.

Below you can find the logs from my FTP-server when using Internet Explorer (which works), and Windows Explorer (which does not work). I've manually replaced the user-name and my IP in the logs with "<Username>" and "<IP>".

--- Windows Explorer: ---

Code:

(000020) 31.01.2009 22:30:36 - (not logged in) (<IP>) > connected to ip : 192.168.0.10
(000020) 31.01.2009 22:30:36 - (not logged in) (<IP>) > sending welcome message.
(000020) 31.01.2009 22:30:36 - (not logged in) (<IP>) > 220 My FTP
(000020) 31.01.2009 22:30:36 - (not logged in) (<IP>) > USER Username
(000020) 31.01.2009 22:30:36 - (not logged in) (<IP>) > 331 Password required for <Username>.
(000020) 31.01.2009 22:30:36 - (not logged in) (<IP>) > PASS ********
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > logged in.
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > 230 User <Username> logged in.
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > OPTS utf8 on
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > 500 Unknown command.
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > PWD 
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > 257 "/" is current directory.
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > CWD /
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > asked to change directory : 'F:\SHARED\ -> F:\SHARED\' --> Access allowed.
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > 250 CWD command successful. "/" is current directory.
(000020) 31.01.2009 22:30:36 - <Username> (<IP>) > disconnected. (00:00:00)

--- Internet Explorer: ---

Code:

(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > connected to ip : 192.168.0.10
(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > sending welcome message.
(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > 220 My FTP
(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > USER anonymous
(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > 331 Password required for anonymous.
(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > PASS ********
(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > 530 Login or Password incorrect.
(000039) 31.01.2009 22:44:59 - (not logged in) (<IP>) > disconnected.
(000040) 31.01.2009 22:45:06 - (not logged in) (<IP>) > connected to ip : 192.168.0.10
(000040) 31.01.2009 22:45:06 - (not logged in) (<IP>) > sending welcome message.
(000040) 31.01.2009 22:45:06 - (not logged in) (<IP>) > 220 My FTP
(000040) 31.01.2009 22:45:06 - (not logged in) (<IP>) > USER <Username> 
(000040) 31.01.2009 22:45:06 - (not logged in) (<IP>) > 331 Password required for <Username>.
(000040) 31.01.2009 22:45:06 - (not logged in) (<IP>) > PASS ********
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > logged in.
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > 230 User <Username> logged in.
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > CWD /
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > asked to change directory : 'F:\SHARED\ -> F:\SHARED\' --> Access allowed.
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > 250 CWD command successful. "/" is current directory.
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > TYPE A
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > 200 Type set to A.
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > PASV 
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > 227 Entering Passive Mode (192,168,0,10,212,234)
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > LIST 
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > 150 Data connection accepted from <IP>:64825; transfer starting.
(000040) 31.01.2009 22:45:06 - <Username> (<IP>) > 226 Transfer ok

I also tried accessing ftp://ftp.microsoft.com/ . Same issues there. Works fine in Internet Explorer, but gives "Invalid Handle" when using Windows Explorer.

Edit: Googled some more and found that this is a known bug which will be fixed in a future build.
Source: http://social.technet.microsoft.com/...-66c48a15abf7/

ZaroXen said:

Edit: Googled some more and found that this is a known bug which will be fixed in a future build.
Source: FTP

Is there a known workaround to remove the error? Your link doesn't mention any.

BTW. I get this on one machine and not the other. Both are running Build 7100 (RC).

I open windows Explorer -> Browse to Computer -> click on Map Network Drive

In the map network drive window click on the link to "Connect to a Web site that you can use to store your documents and pictures"

Followed through the wizard.

Entered the ftp site address without any of the credentials. I then unchecked the "Log on anonymously" checkbox

I then entered my username, was prompted for the password - selected save password.

It then shows up in Windows Explorer as a File Folder.

I hope this helps.

The "fixes"mentioned earlier did not work for me.

Here's my problem. I have an HTPC set up in the living room. I used to be able to FTP videos and such to it by opening explorer and in the address bar typing"ftp://usernameassword@ipaddress" Then all the network shares on the htpc would show up and I could transfer files.

Now it won't connect. I get the error about it not being typed correctly or I don't have permission. I've been using MSE antivrus and windows firewall without making any changes to either since I installed windows 7 on all my PC's.
I've tried Filezilla and it doesn't work either. Connection times out.
I ran troubleshooter>view all> incoming connections. It says that more than one device is performing NAT. This might be related to my problem.

Has anyone got a fix that works for me? Is anyone else experiencing this problem as well?