Please attach a full session log file.
- martin
< 2016-12-15 21:37:04.695 230-OK. Current directory is /
< 2016-12-15 21:37:04.695 230 408096003 Kbytes used (77%) - authorized: 524185600 Kb
> 2016-12-15 21:37:04.695 SYST
< 2016-12-15 21:37:04.695 215 UNIX Type: L8
> 2016-12-15 21:37:04.695 FEAT
< 2016-12-15 21:37:04.695 211-Extensions supported:
< 2016-12-15 21:37:04.695 EPRT
< 2016-12-15 21:37:04.695 IDLE
< 2016-12-15 21:37:04.695 MDTM
< 2016-12-15 21:37:04.726 SIZE
< 2016-12-15 21:37:04.726 MFMT
< 2016-12-15 21:37:04.726 REST STREAM
< 2016-12-15 21:37:04.726 MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
< 2016-12-15 21:37:04.726 MLSD
< 2016-12-15 21:37:04.726 AUTH TLS
< 2016-12-15 21:37:04.726 PBSZ
< 2016-12-15 21:37:04.726 PROT
< 2016-12-15 21:37:04.726 TVFS
< 2016-12-15 21:37:04.726 ESTA
< 2016-12-15 21:37:04.726 PASV
< 2016-12-15 21:37:04.726 EPSV
< 2016-12-15 21:37:04.726 SPSV
< 2016-12-15 21:37:04.726 ESTP
< 2016-12-15 21:37:04.726 211 End.
< 2016-12-15 21:37:04.726 Script: Connected
. 2016-12-15 21:37:04.726 Connected
. 2016-12-15 21:37:04.726 Doing startup conversation with host.
< 2016-12-15 21:37:04.726 Script: Starting the session...
> 2016-12-15 21:37:04.726 PWD
< 2016-12-15 21:37:04.726 257 "/" is your current location
. 2016-12-15 21:37:04.726 Changing directory to "/Backup_VM/WSUS".
> 2016-12-15 21:37:04.726 CWD /Backup_VM/WSUS
< 2016-12-15 21:37:04.726 250 OK. Current directory is /Backup_VM/WSUS
. 2016-12-15 21:37:04.726 Getting current directory name.
> 2016-12-15 21:37:04.726 PWD
< 2016-12-15 21:37:04.726 257 "/Backup_VM/WSUS" is your current location
. 2016-12-15 21:37:04.726 Startup conversation with host finished.
< 2016-12-15 21:37:04.726 Script: Session started.
. 2016-12-15 21:37:04.726 File: 'Virtual Hard Disks\WSUS.vhdx' [2016-12-15T17:20:04.150Z] [29095886848]
. 2016-12-15 21:37:04.726 Copying "Virtual Hard Disks\WSUS.vhdx" to remote directory started.
. 2016-12-15 21:37:04.726 Binary transfer mode selected.
. 2016-12-15 21:37:04.726 Starting upload of Virtual Hard Disks\WSUS.vhdx
> 2016-12-15 21:37:04.726 CWD /Backup_VM/WSUS/Virtual Hard Disks/
< 2016-12-15 21:37:04.726 250 OK. Current directory is /Backup_VM/WSUS/Virtual Hard Disks
> 2016-12-15 21:37:04.726 PWD
< 2016-12-15 21:37:04.726 257 "/Backup_VM/WSUS/Virtual Hard Disks" is your current location
> 2016-12-15 21:37:04.726 TYPE A
< 2016-12-15 21:37:04.726 200 TYPE is now ASCII
> 2016-12-15 21:37:04.726 PASV
< 2016-12-15 21:37:04.726 227 Entering Passive Mode (178,33,121,127,63,58)
> 2016-12-15 21:37:04.757 MLSD
. 2016-12-15 21:37:04.757 Connecting to 178.33.121.127:16186 ...
< 2016-12-15 21:37:04.757 150 Accepted data connection
< 2016-12-15 21:37:04.757 226-Options: -a -l
< 2016-12-15 21:37:04.757 226 3 matches total
. 2016-12-15 21:37:04.757 Data connection closed
. 2016-12-15 21:37:04.757 type=cdir;sizd=3;modify=20161214223457;UNIX.mode=0755;UNIX.uid=100;UNIX.gid=100;unique=7ag2a9; .
. 2016-12-15 21:37:04.757 type=pdir;sizd=5;modify=20161214224335;UNIX.mode=0755;UNIX.uid=100;UNIX.gid=100;unique=7ag29f; ..
. 2016-12-15 21:37:04.757 type=file;size=29095886848;modify=20161214171627;UNIX.mode=0644;UNIX.uid=100;UNIX.gid=100;unique=7ag2aa; WSUS.vhdx
. 2016-12-15 21:37:04.773 File transfer was completed before disconnect
> 2016-12-15 21:37:04.773 MFMT 20161215172004 WSUS.vhdx
. 2016-12-15 21:37:19.384 Timeout detected. (control connection)
. 2016-12-15 21:37:19.384 Copying files to remote side failed.
. 2016-12-15 21:37:19.384 Connection was lost, asking what to do.
. 2016-12-15 21:37:19.384 Asking user:
. 2016-12-15 21:37:19.384 Lost connection. ("Timeout detected. (control connection)","Copying files to remote side failed.")
< 2016-12-15 21:37:19.384 Script: Lost connection.
< 2016-12-15 21:37:19.384 Script: Timeout detected. (control connection)
< 2016-12-15 21:37:19.384 Copying files to remote side failed.
sometimes, some files of the folder to move are not transfered.
/log=path_to_log_file
command-line argument. Submit the log with your post as an attachment. Note that passwords and passphrases not stored in the log. You may want to remove other data you consider sensitive though, such as host names, IP addresses, account names or file names (unless they are relevant to the problem). If you do not want to post the log publicly, you can mark the attachment as private.