curl Exit Codes

Exit codes returned by the curl command-line tool when a transfer fails.

59 codes

• 0 OK
• 1 Unsupported protocol
• 2 Failed to initialise
• 3 Malformed URL
• 4 Feature not available
• 5 Could not resolve proxy
• 6 Could not resolve host
• 7 Failed to connect
• 8 Weird server reply
• 9 FTP access denied
• 10 FTP accept failed
• 11 FTP weird PASS reply
• 12 FTP accept timeout
• 13 FTP weird PASV reply
• 14 FTP weird 227 format
• 15 FTP cannot get host
• 16 HTTP/2 error
• 17 FTP could not set type
• 18 Partial file
• 19 FTP could not download
• 21 FTP quote error
• 22 HTTP page not retrieved
• 23 Write error
• 25 FTP could not STOR file
• 26 Read error
• 27 Out of memory
• 28 Operation timeout
• 30 FTP PORT failed
• 31 FTP could not use REST
• 33 HTTP range error
• 34 HTTP post error
• 35 SSL connect error
• 36 FTP bad download resume
• 37 FILE read error
• 38 LDAP bind operation failed
• 39 LDAP search failed
• 41 Function not found
• 42 Aborted by callback
• 43 Internal error
• 45 Interface error
• 47 Too many redirects
• 48 Unknown option
• 49 Malformed telnet option
• 51 Peer certificate verification failed
• 52 Empty reply from server
• 53 SSL crypto engine not found
• 54 SSL crypto engine default failed
• 55 Network send failure
• 56 Network receive failure
• 58 Problem with local certificate
• 59 Could not use SSL cipher
• 60 Peer certificate not verified
• 61 Unrecognised transfer encoding
• 63 Maximum file size exceeded
• 67 Login denied
• 73 Remote file already exists
• 77 Problem with SSL CA cert
• 78 Remote file not found
• 92 HTTP/2 stream error