no connect to server

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4wusie
500 Command not understood
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Last name: friedrichs

no connect to server

#1 Post by 4wusie » 2019-01-31 13:28

Hi guys, I have the following problem: FileZilla runs under win 7. I manage 5 FTP accounts via FileZilla. One of them does not connect, although the settings are correct. All others connect to the respective server. Under Win xp the faulty account connects with the same settings.

Sorry, this is translated with a translator. I am German

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botg
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Re: no connect to server

#2 Post by botg » 2019-01-31 14:44

What is being shown in the message log of both the client and the server?

4wusie
500 Command not understood
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Last name: friedrichs

Re: no connect to server

#3 Post by 4wusie » 2019-02-01 15:32

Error: Critical error: Connection to the server failed.

...nothing more.

4wusie
500 Command not understood
Posts: 5
Joined: 2019-01-31 13:08
First name: wolfgang
Last name: friedrichs

Re: no connect to server

#4 Post by 4wusie » 2019-02-01 15:40

Sorry....

Status: Resolving the IP address for www.XXXXXXXXXXXXX.de
Status: Connect to 217.160.231.134:21...
Status: Connection established, waiting for welcome message...
Answer: 220 FTP server ready.
Command: USER pxxxxxxxxxxxx
Answer: 331 Password required for pxxxxxxxx
Command: PASS *********
Answer: 530 Login incorrect.
Error: Critical error: Connection to server failed.
Status: Connection to server disconnected
Status: Resolving the IP address for www.xxxxxxxxx.de
Status: Connect to 217.160.231.134:21...
Status: Connection established, waiting for welcome message...
Answer: 220 FTP server ready.
Command: USER pxxxxxxxx
Answer: 331 Password required for pxxxxxx
Command: PASS *********
Answer: 530 Login incorrect.
Error: Critical error: Connection to server failed.

4wusie
500 Command not understood
Posts: 5
Joined: 2019-01-31 13:08
First name: wolfgang
Last name: friedrichs

Re: no connect to server

#5 Post by 4wusie » 2019-02-01 15:53

Image

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boco
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Re: no connect to server

#6 Post by boco » 2019-02-01 22:01

The FTP server tells you that it doesn't accept the supplied login data. This can be due to multiple reasons (either one or more than one):

1. The username is wrong. Depending on the server used, usernames may be case sensitive. Otherwise, you could have made a typo, or copy-pasted a stray blank character into the field.
2. The password is wrong. Essentially the same issues as above, except for the fact that passwords are always case sensitive.
3. You might reach the wrong FTP server. Can happen with rogue FTP server software (like IIS) installed without the user knowing. Another reason could be a router having enabled the NAS/remote FTP maintenance feature and thus blocking the FTP port.
4. As you use plain non-encrypted FTP, anything and anyone on the way FTP traffic passes through can read and change everything transferred. Scary thought? Well, use FTP over TLS with an appropriate security level (TLS 1.2 or 1.3 and strong ciphers) whenever possible.
5. Last, but not least: Faulty hardware (e. g. RAM) or drivers (e. g. Ethernet, WiFi) can corrupt packets and prevent you from logging in.

Please check all points, in succession.
### BEGIN SIGNATURE BLOCK ###
No support requests per PM! You will NOT get any reply!!!
FTP connection problems? Do yourself a favor and read Network Configuration.
All FileZilla products fully support IPv6. http://worldipv6launch.org
### END SIGNATURE BLOCK ###

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botg
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Re: no connect to server

#7 Post by botg » 2019-02-02 21:58

One additional possibility: There are malicious firewalls out there that change submitted credentials, or inject forged replies.

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boco
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Re: no connect to server

#8 Post by boco » 2019-02-02 22:39

I think I got that covered in "4."?
### BEGIN SIGNATURE BLOCK ###
No support requests per PM! You will NOT get any reply!!!
FTP connection problems? Do yourself a favor and read Network Configuration.
All FileZilla products fully support IPv6. http://worldipv6launch.org
### END SIGNATURE BLOCK ###

4wusie
500 Command not understood
Posts: 5
Joined: 2019-01-31 13:08
First name: wolfgang
Last name: friedrichs

Re: no connect to server

#9 Post by 4wusie » 2019-02-03 17:31

Sorry, sorry, sorry Guys.....
I entered a wrong password.
In my documents I had an old password, which also had seven characters like the new one. I must have already entered the new password in Win xp and in Win 7 I used the old one again.
I am an idiot.
Thank you for your efforts

greetings

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