THE INFORMATION IN THIS ARTICLE APPLIES TO:

• CuteFTP Pro®, v8.3.2 and earlier 
• If you are using CuteFTP 8.3.3 or later, see related KB article ID 10606.

SYMPTOMS

When attempting a connection using the SFTP protocol, the following error is encountered:

STATUS:>   Getting listing ""...

STATUS:>   Initializing SFTP21 module...

STATUS:>   Connecting to SFTP server... 192.168.20.135:22 (ip = 192.168.20.135)...

ERROR:>     The file being transferred in ASCII mode appears to be a Binary file. Proceed anyway?

ERROR:>     Can't connect to 192.168.20.135:22. SFTP21 error = #0.

STATUS:>   SFTP21 connection closed.

CAUSE

This error is the result of a timeout of an SFTP operation. The first line of error text is irrelevant and should be disregarded. There are two known possible causes for this error:

1. This problem may be caused by a misconfigured firewall.
2. This is a known problem when using CuteFTP versions 8.0.0 through 8.0.7 and attempting an SFTP connection to a server computer running Titan FTP Server. This issue was fixed in CuteFTP 8.1.
3. Also see related SFTP21 error = #0. 0

RESOLUTION

1. Check the firewall settings and ensure that port 22 is open and enabled for SFTP transfers.
2. If you are connecting with a server computer running Titan FTP Server, update to CuteFTP 9.2 or greater.