sftp hangs when trying to connect to SFTP server

[Marco Atzeri]

On 04.12.2021 15:35, Mark Hansen wrote:
> Team,
> 
> I'm not sure when this started, but I know for sure I was able to do 
> this in the past.
> 
> I'm running cygwin on Windows 10 and want to connect to an SFTP server 
> using the 'sftp' command.
> 

Hi Mark,
can you try with 1st entry in:
https://www.sftp.net/public-online-sftp-servers

sftp -P 22 demo@test.rebex.net
(demo@test.rebex.net) Password:
Connected to test.rebex.net.
sftp> ls
aspnet_client  pub            readme.txt
sftp> ls pub
pub/example
sftp> ls pub/example/
pub/example/KeyGenerator.png
pub/example/KeyGeneratorSmall.png
pub/example/ResumableTransfer.png
pub/example/WinFormClient.png
pub/example/WinFormClientSmall.png
pub/example/imap-console-client.png
pub/example/mail-editor.png
pub/example/mail-send-winforms.png
pub/example/mime-explorer.png
pub/example/pocketftp.png
pub/example/pocketftpSmall.png
pub/example/pop3-browser.png
pub/example/pop3-console-client.png
pub/example/readme.txt
pub/example/winceclient.png
pub/example/winceclientSmall.png
sftp> quit


> Any idea what is causing this? What can I do to troubleshoot this further?

please provide as attachment the cygcheck.out

as mentioned on https://cygwin.com/problems.html