FTP uses two channels: a channel (for instructions) and a Data channel (for the actual file transfer).
Temporarily disable your local firewall/antivirus or whitelist your FTP client to see if the transfer completes. 5. ASCII vs. Binary Transfer Modes FTP transfers files in two main modes: ASCII: For text files (HTML, CSS, JS). Binary: For everything else (Images, PDFs, ZIPs). ftp download 0 byte file
Sometimes, a "Deep Packet Inspection" feature in a hardware firewall or an overly aggressive antivirus will see an incoming FTP stream and flag it as a threat. It severs the data connection immediately after the file header is received, leaving you with an empty file. FTP uses two channels: a channel (for instructions)
Are you using a specific like FileZilla, or are you seeing this error while running a bash/Python script ? ASCII vs