Network error software caused connection abort, for some SFTP servers but not others

I have been using WinSCP for several years to access files that are stored on someone else's servers. It has always worked with 4 SFTP host names I have used, even with firewalls on.

I tried today to connect to two other SFTP hosts but keep getting the error: network error: software caused connection abort. This happens after the information has been entered and the window comes up saying "Searching for host" and "Connecting to host".

I have confirmed with others that they are able to access the server during the time I have been trying. I have also confirmed that the other hosts I previously used still work so nothing is blocking WinSCP in general.

I have turned off and on Windows Firewall with no change. I have also tried Filezilla and get the same error message.

Does it make any sense that I would be able to connect to some SFTP hosts and not others if the issue was on my end? Anything I can do to fix it? Thanks.

You should start by contacting the server administrator to check with them, if the connection attempt reaches the server.

I am facing the same problem...

network error: software caused connection abort
Error while tunnelling the connection.
Administratively prohibited (open filed).

Can anyone help to solve it.

Thanks

nurain wrote:

I am facing the same problem...

network error: software caused connection abort
Error while tunnelling the connection.
Administratively prohibited (open filed).

Please start a new thread for your problem and attach a full session log file showing the problem (using the latest version of WinSCP).

Hi,

I am also facing the same problem. Sometime I am losing the connection in the middle of a session. I have around ten servers in my WinScp, out of which only two or three having the problem. Please advise!

I'm also facing the issue, using C# on Windows10 and I have added proxy aswell to connect external server(sftp).

please advise.

billa wrote:

I'm also facing the issue, using C# on Windows10 and I have added proxy aswell to connect external server(sftp).

Thanks for your report.

Can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.