Have a customer that is uploading a .zip file made with WinRAR on a PC to our FTP Server (Server 2003), when we try to use WinRAR to unzip the file after copying it from the FTP server to a PC we get a Diagnostic Message: The archive is corrupt. I've also tried uncompressing the file on the FTP server itself, using the default windows unzip, it also reports that the file is corrupt. The customer says that after he uploads it to the FTP server, he can download it back and then uncompressed the file just fine. We are not experiencing the same problems with anyone else files. I double checked the login account permissions, and they are exactly as they are supposed to be. Anyone have any idea what our customer is doing wrong?