Tricky FTP File Upload Download Problem w/ Win XP Pro
Posted on 2005-05-07
I have been trying to set up an FTP service for file uploads and downloads on a Win 2003 Server sp2. I have a Linksys BEFSR41 firewall/router on my network. Port 21 TCP and UDP are forwarded to the server. Port 20 TCP is forwarded to the server.
My customer running XP Pro sp2 and IE 6.0 can connect to the FTP server and navigate the directory, but he cannot transfer a file in either direction. The upload begins and then becomes infinitely long as the message "Calculating the time required to upload the files." never clears. The download has a similar failure showing "Copying file..." forever until I kill the operation. In that case I also get the followup error message "Remote procedure call failed".
HOWEVER, a workstation running Win98 sp2 and IE 6.0 at the same location CAN upload and download files. We have verified that the Advanced Options for IE are identical for both workstations. Both of these workstations are on the same LAN behind the same firewall, etc.
In IE Advanced Options I have set PASV=ON and PASV=OFF, likewise for enabling folder view for FTP sites, and none of this solves the problem of FTP file transfers in XP Pro. Does anyone have a clue?
Bonus question: When the FTP service was on a Win 2000 Server, I believe file transfers with the client running XP Pro DID WORK (my memory as to what changed where and when could be wrong). Does this make sense?
Thank you for your time,