IIS FTP server not working after purchase of SSL certificate

ftpiis

I've been connecting to my web server with active mode in FileZilla with no problems. Over the weekend, an SSL certificate was dropped into a folder that I access with FTP, and which contains files for the website. Now I am receiving a 425 error in active mode on the FTP root, so I can't really do anything but log in. In passive mode, I can connect and move around in the directory tree, but the connection seems shaky. Occasionally I'll time out, and I can't get access at all to the folder containing the SSL certificate.

My question is how does the SSL certificate affect my FTP connection (if at all)? Does its presence demand the use of FTP over SSL?

Note: As far as I know, the only change which occurred was the placement of the SSL certificate. Firewall settings, FTP client and server settings should all be the same as before, when everything was working.

Best Answer

The mere presence of a cert isn't going to affect connections to the server at all, it's just another file from the server's perspective. Now, if that cert was installed and the server set to use SSL then that'd be a different story but I'm not gathering that from your description of the problem. The most likely thing is that something actually did change that disabled the use of active ftp. Can you confirm that there actually were no changes made to the firewall?