FAQ - Frequently Asked Questions
Please note, when we use the term "FTP" in the following,
we are referring to all supported protocols, FTP, FTPS and SFTP.
Q: I have lost my registration key. What should I do?
A: Click here to locate your missing
Q: I want to upgrade my 3D-FTP, what whould I do?
A: Click here to see if you are entitled
to upgrade to latest 3D-FTP version with reduced price.
Q: I purchased a license and got the unlock key, where can I
download the full version?
A: There is no separate full version of the software. But instead,
you convert the 30-day evaluation version to the full version by
entering the unlock key at the startup screen. You will receive
the unlock key via email after purchase. After your software is
registered, you can see the registration details in the menu Help
> About > About-window. You can download the evaluation version
from download page.
connect, Cannot get remote directory listing, Firewalls, Proxies
Q: Is the software compatible with the Windows 7, Vista and
XP SP2 firewall?
A: Yes. All our software is fully compatible with the firewall
installed by the Windows 7, Vista and XP Service Pack 2. You should
not need to make any changes to firewall settings, but the software
should work as-is (just make sure that Passive Transfer is ON in
the Settings > Firewall-tab). If you have just installed the
XP SP2 firewall and the software stops functioning, it most probably
is NOT the windows firewall that prevents it from functioning, but
one of the firewall/antivirus/worm protection features of some other
software, like Norton, McAfee, ZoneAlarm, F-secure, Avast, etc.
See more below.
Q: 3D-FTP cannot connect to any FTP site. What's wrong?
A: Personal firewall software (like Norton Personal Firewall, McAfee
Personal Firewall, ZoneAlarm, etc.) can block access to all FTP
servers. To enable support for firewalls, go to Settings > Firewall-tab
> change Use Passive Transfer setting. If it's checked, uncheck
it, and vice versa. Save changes and try connecting again. Any difference?
To see if it is your personal firewall that is blocking access,
turn it off temporarily and try connecting again. If you can connect
successfully, then the problem is with your firewall settings. Check
the personal firewall documentation to learn how to enable FTP access.
In addition, Norton Anti Virus 2005 (and newer) Worm Protection
can block the software, so please consult Symantec documentation
about how to enable FTP.
Q: When connecting to a server, connection fails every time
after sending the "LIST" command to the server. What's
A: The software sends the "LIST" command to the FTP server
to request a directory listing. This might fail due to firewall/proxy
issues (see more above), so please try changing the Passive Mode
setting. If you CAN successfully connect to other FTP servers, then
the problem is related to your FTP server configuration. Please
consult your network admin or hosting company if this problem involves
logging onto a hosting company's server. If you cannot connect to
any ftp server, then this is probably a firewall problem. If you
are running personal firewall software, try disabling it and connecting
again. Also, try changing the "Passive mode" settings
as described above.
Q: I get error "Illegal PORT Command" when trying
A: If you get the following error message
500 Illegal PORT Command
Syntax error, command unrecognized
you are most likely behind a firewall. To enable support for firewalls,
go to Settings > Firewall-tab > and check "Use Passive
Transfer". Save changes and try connecting again. Also, some
FTP servers are configured to not allow PORT mode, so try switching
to passive mode.
Q: I would like to use a proxy or firewall for my FTP access.
Can I do that?
A: Yes. Please see firewall/proxy settings in the Settings>
Firewall-tab. Check the "Use proxy/firewall server" check
box and enter firewall connect parameters in the fields.
adjusting number of threads
Q: I really do not understand the concept of multithreading.
What is it and what benefits do I get from it?
A: In very simple terms:
1 thread = 1 simultaneous connection to the FTP server
5 threads = 5 simultaneous connections to the FTP server
20 threads = 20 simultaneous connections to the FTP server
So a thread means a connection to the FTP server. So in multi-threaded
mode you have multiple simultaneous connections to the server. Then
you ask, why would you want multiple simultaneous connections?
The answer is
a) Faster browsing speed. When the software starts a multi-folder
file transfer, it first needs to catalogue the related remote server
folders. In other words, it asks for a directory listing for all
relevant folders. With directory information at hand, it can then
decide what files needs to be transferred. This browsing process
is necessary even when no files will be transferred. In multithreaded
mode, many connections are requesting directory listings simultaneously,
in parallel, greatly speeding up the initial browsing process.
b) Faster transfer speed. Each additional thread transfers data
simultaneously with other threads. So more threads means more data
transferred simultaneously. A good analogy is the lanes on a highway.
The more lanes you have, the more cars can travel from A to B in
a given time. Single threaded mode is like a one-lane highway.
Q: When trying to transfer files, I get "Service not available..."
or "Too many connections..." messages in the Log-pane
and transfers fails after max retries.
A: You are probably trying to transfer files from/to an FTP server
that limits the number of simultaneous connections allowed from
one computer (=IP address). First try switching to single thread
mode by clicking number 1 in the status bar threads pane. Then try
connecting again. If it succeeds, you can switch to multithreaded
mode and try again and increase the number of threads in use. In
this way, you will discover the maximum number of threads that can
be used for transfers with that particular server.
crashes, GPFs, Error messages
Q: The program gives an error message and crashes. What is wrong?
A: We have fixed many bugs in the latest releases. So please make
sure that you have the latest version of the software installed
(download newer version here). If you
still experience problems, please contact
System requirements, Windows versions
Q: Do you have a Mac/Linux/Unix version?
A: Unfortunately No
Q: What versions of Windows are supported?
A: We support Windows 7, Vista, XP, Windows 2003/2008 Server, Windows
2000, ME and 98. Both 32-bit and 64-bit editions.
Q: What are the minimum system requirements for 3D-FTP?
A: 128MB RAM and 50 MB of hard disk space, maybe some more disk
space for log files. In general, if you can run a Windows version
we support (see above), then you can run 3D-FTP.