Can't connect to Windows 10 ftp server

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RipperT asked Feb 11, '22 JoseZero-8614 answered May 10, '22

Can't connect to Windows 10 ftp server

Forgive if this isn't the right forum to post in. Please direct me if so.

I'm a total newb trying to set up a file server in Windows 10. I've set up IIS services (FTP service, FTP extensibility, and IIS management console). I created a test site with a physical path to a local folder. I set up a port forward (21) with xFinity (they say my server doesn't need a static IP address).

I want the server to be accessible from the internet and since apparently the major browsers have disabled ftp support, I've tried connecting with Cute FTP and Filezilla by using the server's public IP address, user name and password. Both just time out. I need to know where to start troubleshooting this.

Thank you for any help,

Ripper

windows-server-iis

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BruceZhang-MSFT · Feb 14 at 03:29 AM

Hi @RipperT ,

After you deploy FTP, you should first test on the server to see if you can access the site in the browser through the ftp protocol. If it can be accessed successfully, the firewall network and other factors will be given priority to consider when accessing remotely. If you cannot access, you should check the specific error message in the ftp log.

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Answer 1 · 2022-02-12T04:22:09.083Z

yagmoth555 answered Feb 12, '22 NishantDewangan-9358 commented May 9, '22

Hi

If your port forward is done in the router, make sure it's for both port 20 and 21. You need both ports.

Make sure on the Windows 10 the firewall is set to allow such traffics, from external IP.

Is it working from a computer inside you LAN ? I ask as some ISP might block such port for residential's client.

Let us know if you see some error in cuteftp or not.

Thanks

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NishantDewangan-9358 · May 09 at 09:20 PM

hii, i want to access windows 10 files through my phone
my PC has a wifi adapter, i don't have any router to perform such settings, so
FTP in windows 10 is not working , i've tried every steps,

i enabled ftp in one click in android,
but in PC its very frustrating, i wanna throw my PC very bad, shitty windows os

plz help

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Answer 2 · 2022-02-13T17:29:12.247Z

Bruce-SqlWork answered Feb 13, '22

Typically to access a server from the internet the first step is configure the modem / router to map a port to an internal server.

The second step is to determine the modem / routers public ipaddress.

If you have a static, you typically buy a domain name and register with a dns provider. Your isp may supply this service.

If dynamic, you can use a dynamic dns proxy service. You typically install an application on the server that polls the dns service to update its current public ipaddress

Finally you can just use a site like what’s my ipaddress, and just use the ipaddress.

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Answer 3 · 2022-02-14T04:10:32.747Z

RipperT answered Feb 14, '22 BruceZhang-MSFT edited Feb 18, '22

Thank you for the response.

My xFinity router's setup page forces me to their website to set up port forwarding, which I did for ports 20, as you suggested, and 21 . The firewalls on the server and the desktop machine I'm using to connect are turned off for testing purposes. I can ping the server from my desktop and it's accessible over LAN. Cute FTP error says this:

STATUS:> [2/12/2022 8:35:13 AM] Getting listing ""...
STATUS:> [2/12/2022 8:35:13 AM] Connecting to FTP server... xx.xx.xxx.xxx:21 (ip = xx.xx.xxx.xxx)...
ERROR:> [2/12/2022 8:35:34 AM] The connection failed due to an error or timeout.
1) Verify that the destination IP address is correct.
2) Increase the connection timeout threshold under Global Settings | Connection.
3) Switch to the opposite data connection type (PASV or PORT) under Site Settings | Type tab.
4) Verify that the problem is not local by trying to connect to an alternate server.
5) If a server name was used, verify it resolves to the correct address.
6) If using a local server table for server name resolution, check to see that it doesn't resolve to an obsolete address.
7) Try pinging the address.
8) If you are using a router, verify the router is up and running (check by pinging it and then ping an address outside of the router).
9) Do a traceroute to the destination to verify all routers along the connection path are operational.
10) Verify that your subnet mask is setup properly.
11) Verify that your local software or hardware firewall is not blocking outbound connections originating from CuteFTP.
12) Verify that your anti-virus software is not at fault (try disabling it).

I've discovered that I can connect to the server from a different machine (a Win 10 laptop) easily using Explorer and WinSCP, so the problem obviously lies with the desktop, but I don't know what to look for. Any suggestions are appreciated.

Rip

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BruceZhang-MSFT · Feb 18 at 02:54 AM

Hi @RipperT ,

Have tried my suggestion to connect ftp site from browser or command on server itself?

I've discovered that I can connect to the server from a different machine (a Win 10 laptop) easily using Explorer and WinSCP, so the problem obviously lies with the desktop,

I'm not sure if I understand it correctly. Do you mean that you can access ftp site through another different machine, but failed when use current desktop machine? If so, that means IIS and server did not set any restriction to block outside requests. But the desktop machine itself or DNS(public DNS, machine's DNS)), route, did not find the server through IP.

You can check IIS ftp log. Maybe there's no error message about the failed request because the server didnot receive any requests.

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Answer 4 · 2022-02-17T15:20:55.923Z

RipperT answered Feb 17, '22 NishantDewangan-9358 commented May 9, '22

Can anyone help with this?

Tnaks

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NishantDewangan-9358 · May 09 at 09:21 PM

you found your solution?
hii, i want to access windows 10 files through my phone
my PC has a wifi adapter, i don't have any router to perform such settings, so
FTP in windows 10 is not working , i've tried every steps,

i enabled ftp in one click in android,
but in PC its very frustrating, i wanna throw my PC very bad, shitty windows os

plz help

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Answer 5 · 2022-05-10T21:09:17.377Z

JoseZero-8614 answered May 10, '22

The way traditional FTP works is not like many others applications.
Usually port 21 is used for initial connected after that a lot of other ports are used to transfer files.
Since you behind a router with NAT, you have to use it in Passive Mode, search for FTP Active/Passive mode.
Here a link that might help you ftp_modes

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