ftps gives "Unable to build data connection"

This was working fine until recently. Not sure when I last tried it, but pretty sure it was working a month or two ago. Now, if I copy a file to my webserver via ftps, I get the error shown below. Plain ftp works fine and FileZilla has no problem with ftps.

Code:
C:\TT\RatingsCentral\Code\Web>iftp /c
 
C:\TT\RatingsCentral\Code\Web>iftp /p1 /r "ftps://www.ratingscentral.com"
The server provided the following certificate:
Issuer: C=US, S=VA, L=City, O=Control Aaccess, OU=Control Aaccess, CN=virgo.dns-shield.com, E=support@virgo.dns-shie
ld.com
Subject: C=US, S=VA, L=City, O=Control Aaccess, OU=Control Aaccess, CN=virgo.dns-shield.com, E=support@virgo.dns-shi
eld.com
The following problems have been determined for this certificate: [0x800b0109] A certification chain processed corre
ctly but terminated in a root certificate not trusted by the trust provider.
 
Would you like to continue? (Y/N)? Y
 
C:\TT\RatingsCentral\Code\Web>copy ModifyFormStuff.php "ftps:/httpdocs/"
C:\TT\RatingsCentral\Code\Web\ModifyFormStuff.php => ftps://www.ratingscentral.com/httpdocs/ModifyFormStuff.php
TCC: FTP protocol error: 425 Unable to build data connection: Operation not permitted "/httpdocs/ModifyFormStuff.php
"
    0 files copied      1 failed
 
C:\TT\RatingsCentral\Code\Web>ver
 
TCC  14.03.58  Windows Vista [Version 6.0.6002]
 
This was working fine until recently. Not sure when I last tried it, but pretty sure it was working a month or two ago. Now, if I copy a file to my webserver via ftps, I get the error shown below. Plain ftp works fine and FileZilla has no problem with ftps.
It was working for a while (I believe), but the error has returned. TCC 15.01.50 Windows Vista [Version 6.0.6002].
 

rconn

Administrator
Staff member
May 14, 2008
12,367
150
I just successfully copied files to & from the JP Software ftp site via SSL, so I don't think it's a generic problem with TCC. A 425 error is usually caused by the server reusing the back connection client socket before Windows has timed it out (240 seconds default).

There's no way I could try to debug what's happening on your server without getting access to it.
 
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