Holger Schauer <schauer(a)coling.uni-freiburg.de&gt; writes: You need to step through the process filter. See whether it is getting any data and if not up to what point there is still data coming in. If you have established that EFS is not receiving some data from its process filter then you need to go in with a debugger to find out whether XEmacs gets any data from ftp.exe at all. Having EFS just implementing the FTP protocol or just shipping a sane FTP client with the NT port sound more and more attractive now. Jan