I am also running into the same issue when uploading to one of our vendor's FTP servers. The account is configured with no read permissions to the directory, only as a drop box. I have upgraded to the latest version, 5.11.3 in the hopes it would resolve the issue, to no avail.
Connecting to swaftp1.schoolwires.com ...
TLS connection established. Waiting for welcome message...
Connected
Starting the session...
Session started.
Active session: [1] USERAccount@swaftp1.schoolwires.com
/
e:\...\sw_user_import.csv | 0 B | 0.0 KB/s | binary | 0%
Error transferring file 'e:\ftpfiles\SchoolWires\sw_user_import.csv'.
Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-SHA384, 2048 bit RSA, ECDHE-
RSA-AES256-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AES(256) Mac=SHA384
Copying files to remote side failed.
The specified network name is no longer available.
(A)bort, (R)etry, (S)kip, Ski(p) all: Abort
Uploading using the GUI yields a "Copying files to remote side failed. Access is denied." error.
. 2018-01-08 12:46:52.520 --------------------------------------------------------------------------
. 2018-01-08 12:46:52.520 WinSCP Version 5.11.3 (Build 7995) (OS 6.3.9600 - Windows Server 2012 R2 Standard)
. 2018-01-08 12:46:52.520 Configuration: HKCU\Software\Martin Prikryl\WinSCP 2\
. 2018-01-08 12:46:52.520 Log level: Normal
. 2018-01-08 12:46:52.520 Local account: CVUSD\LocalWindowsUserAcct
. 2018-01-08 12:46:52.521 Working directory: C:\Users\LocalWindowsUserAcct
. 2018-01-08 12:46:52.521 Process ID: 14564
. 2018-01-08 12:46:52.521 Command-line: "c:\Program Files (x86)\WinSCP\WinSCP.exe" /console=5.11.3 /consoleinstance=_12580_780 "/script=e:\FTPFiles\SchoolWires\SWFTP.txt" "/log=c:\users\LocalWindowsUserAcct\documents\sw.log"
. 2018-01-08 12:46:52.521 Time zone: Current: GMT-8, Standard: GMT-8 (Pacific Standard Time), DST: GMT-7 (Pacific Daylight Time), DST Start: 3/11/2018, DST End: 11/4/2018
. 2018-01-08 12:46:52.521 Login time: Monday, January 8, 2018 12:46:52 PM
. 2018-01-08 12:46:52.521 --------------------------------------------------------------------------
. 2018-01-08 12:46:52.521 Script: Retrospectively logging previous script records:
> 2018-01-08 12:46:52.521 Script: open ftps://<UserAccount>:***@swaftp1.schoolwires.com:21/ -explicit
. 2018-01-08 12:46:52.521 --------------------------------------------------------------------------
. 2018-01-08 12:46:52.521 Session name: <UserAccount>@swaftp1.schoolwires.com (Ad-Hoc site)
. 2018-01-08 12:46:52.521 Host name: swaftp1.schoolwires.com (Port: 21)
. 2018-01-08 12:46:52.521 User name: <UserAccount> (Password: Yes, Key file: No, Passphrase: No)
. 2018-01-08 12:46:52.521 Transfer Protocol: FTP
. 2018-01-08 12:46:52.521 Ping type: Dummy, Ping interval: 30 sec; Timeout: 15 sec
. 2018-01-08 12:46:52.521 Disable Nagle: No
. 2018-01-08 12:46:52.521 Proxy: None
. 2018-01-08 12:46:52.521 Send buffer: 262144
. 2018-01-08 12:46:52.521 UTF: Auto
. 2018-01-08 12:46:52.521 FTPS: Explicit TLS/SSL [Client certificate: No]
. 2018-01-08 12:46:52.521 FTP: Passive: Yes [Force IP: Auto]; MLSD: Auto [List all: Auto]; HOST: Auto
. 2018-01-08 12:46:52.521 Session reuse: Yes
. 2018-01-08 12:46:52.521 TLS/SSL versions: TLSv1.0-TLSv1.2
. 2018-01-08 12:46:52.521 Local directory: default, Remote directory: home, Update: Yes, Cache: Yes
. 2018-01-08 12:46:52.521 Cache directory changes: Yes, Permanent: Yes
. 2018-01-08 12:46:52.521 Recycle bin: Delete to: No, Overwritten to: No, Bin path:
. 2018-01-08 12:46:52.521 Timezone offset: 0h 0m
. 2018-01-08 12:46:52.521 --------------------------------------------------------------------------
. 2018-01-08 12:46:52.522 Connecting to swaftp1.schoolwires.com ...
. 2018-01-08 12:46:52.525 Connected with swaftp1.schoolwires.com, negotiating TLS connection...
< 2018-01-08 12:46:52.677 220 Microsoft FTP Service
> 2018-01-08 12:46:52.678 AUTH TLS
< 2018-01-08 12:46:52.754 234 AUTH command ok. Expecting TLS Negotiation.
. 2018-01-08 12:46:53.028 Verifying certificate for "Schoolwires, Inc." with fingerprint 9b:47:ac:eb:4f:c2:a6:91:ea:f6:f3:51:39:1d:e0:5c:72:f1:25:cb and 20 failures
. 2018-01-08 12:46:53.028 Certificate common name "*.schoolwires.com" matches hostname
. 2018-01-08 12:46:53.056 Certificate verified against Windows certificate store
. 2018-01-08 12:46:53.057 Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AES(256) Mac=SHA384
. 2018-01-08 12:46:53.057 TLS connection established. Waiting for welcome message...
> 2018-01-08 12:46:53.057 USER <UserAccount>
< 2018-01-08 12:46:53.133 331 Password required
> 2018-01-08 12:46:53.133 PASS ****************
< 2018-01-08 12:46:53.210 230 User logged in.
> 2018-01-08 12:46:53.210 SYST
. 2018-01-08 12:46:53.286 The server is probably running Windows, assuming that directory listing timestamps are affected by DST.
< 2018-01-08 12:46:53.286 215 Windows_NT
> 2018-01-08 12:46:53.286 FEAT
< 2018-01-08 12:46:53.363 211-Extended features supported:
< 2018-01-08 12:46:53.363 LANG EN*
< 2018-01-08 12:46:53.363 UTF8
< 2018-01-08 12:46:53.363 AUTH TLS;TLS-C;SSL;TLS-P;
< 2018-01-08 12:46:53.363 PBSZ
< 2018-01-08 12:46:53.363 PROT C;P;
< 2018-01-08 12:46:53.363 CCC
< 2018-01-08 12:46:53.363 HOST
< 2018-01-08 12:46:53.363 SIZE
< 2018-01-08 12:46:53.363 MDTM
< 2018-01-08 12:46:53.363 REST STREAM
< 2018-01-08 12:46:53.363 211 END
> 2018-01-08 12:46:53.364 OPTS UTF8 ON
< 2018-01-08 12:46:53.439 200 OPTS UTF8 command successful - UTF8 encoding now ON.
> 2018-01-08 12:46:53.439 PBSZ 0
< 2018-01-08 12:46:53.516 200 PBSZ command successful.
> 2018-01-08 12:46:53.516 PROT P
< 2018-01-08 12:46:53.592 200 PROT command successful.
. 2018-01-08 12:46:53.592 Connected
. 2018-01-08 12:46:53.592 --------------------------------------------------------------------------
. 2018-01-08 12:46:53.592 Using FTP protocol.
. 2018-01-08 12:46:53.592 Doing startup conversation with host.
> 2018-01-08 12:46:53.592 PWD
< 2018-01-08 12:46:53.669 257 "/" is current directory.
. 2018-01-08 12:46:53.669 Getting current directory name.
. 2018-01-08 12:46:53.669 Startup conversation with host finished.
< 2018-01-08 12:46:53.669 Script: Active session: [1] <UserAccount>@swaftp1.schoolwires.com
> 2018-01-08 12:46:53.670 Script: cd /
. 2018-01-08 12:46:53.670 Changing directory to "/".
> 2018-01-08 12:46:53.670 CWD /
< 2018-01-08 12:46:53.747 250 CWD command successful.
. 2018-01-08 12:46:53.747 Getting current directory name.
> 2018-01-08 12:46:53.747 PWD
< 2018-01-08 12:46:53.823 257 "/" is current directory.
< 2018-01-08 12:46:53.823 Script: /
> 2018-01-08 12:46:53.825 Script: put e:\ftpfiles\SchoolWires\sw_user_import.csv
. 2018-01-08 12:46:53.825 Copying 1 files/directories to remote directory "/" - total size: 170,102
. 2018-01-08 12:46:53.825 PrTime: Yes; PrRO: No; Rght: rw-r--r--; PrR: No (No); FnCs: N; RIC: 0100; Resume: S (102400); CalcS: No; Mask:
. 2018-01-08 12:46:53.825 TM: B; ClAr: No; RemEOF: No; RemBOM: No; CPS: 0; NewerOnly: No; InclM: ; ResumeL: 0
. 2018-01-08 12:46:53.825 AscM: *.*html; *.htm; *.txt; *.php; *.php3; *.cgi; *.c; *.cpp; *.h; *.pas; *.bas; *.tex; *.pl; *.js; .htaccess; *.xtml; *.css; *.cfg; *.ini; *.sh; *.xml
. 2018-01-08 12:46:53.826 File: 'e:\ftpfiles\SchoolWires\sw_user_import.csv' [2018-01-08T07:50:01.048Z] [170102]
. 2018-01-08 12:46:53.826 Copying "e:\ftpfiles\SchoolWires\sw_user_import.csv" to remote directory started.
. 2018-01-08 12:46:53.826 Binary transfer mode selected.
. 2018-01-08 12:46:53.826 Starting upload of e:\ftpfiles\SchoolWires\sw_user_import.csv
> 2018-01-08 12:46:53.826 TYPE I
< 2018-01-08 12:46:53.903 200 Type set to I.
> 2018-01-08 12:46:53.903 PASV
< 2018-01-08 12:46:53.980 227 Entering Passive Mode (52,206,191,229,214,221).
> 2018-01-08 12:46:53.980 STOR sw_user_import.csv
. 2018-01-08 12:46:53.980 Connecting to 52.206.191.229:55005 ...
< 2018-01-08 12:46:54.057 150 Opening BINARY mode data connection.
. 2018-01-08 12:46:54.141 Session ID reused
. 2018-01-08 12:46:54.141 Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AES(256) Mac=SHA384
. 2018-01-08 12:46:54.141 TLS connection established
. 2018-01-08 12:46:54.142 Data connection closed
< 2018-01-08 12:46:54.217 550 The specified network name is no longer available.
. 2018-01-08 12:46:54.217 Copying files to remote side failed.
* 2018-01-08 12:46:54.218 (ExtException) **Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AES(256) Mac=SHA384
* 2018-01-08 12:46:54.218 **
* 2018-01-08 12:46:54.218 Copying files to remote side failed.
* 2018-01-08 12:46:54.218 The specified network name is no longer available.
. 2018-01-08 12:46:54.218 Asking user:
. 2018-01-08 12:46:54.218 Error transferring file 'e:\ftpfiles\SchoolWires\sw_user_import.csv'. ("Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AES(256) Mac=SHA384
. 2018-01-08 12:46:54.218 ","Copying files to remote side failed.","The specified network name is no longer available. ")
< 2018-01-08 12:46:54.218 Script: Error transferring file 'e:\ftpfiles\SchoolWires\sw_user_import.csv'.
< 2018-01-08 12:46:54.218 Script: Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AES(256) Mac=SHA384
< 2018-01-08 12:46:54.218
< 2018-01-08 12:46:54.218 Copying files to remote side failed.
< 2018-01-08 12:46:54.218 The specified network name is no longer available.
* 2018-01-08 12:46:54.219 (EScpSkipFile) Error transferring file 'e:\ftpfiles\SchoolWires\sw_user_import.csv'.
* 2018-01-08 12:46:54.219 Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AES(256) Mac=SHA384
* 2018-01-08 12:46:54.219
* 2018-01-08 12:46:54.219 Copying files to remote side failed.
* 2018-01-08 12:46:54.219 The specified network name is no longer available.
. 2018-01-08 12:46:54.219 Copying finished: Transferred: 16,384, Elapsed: 0:00:00, CPS: 105,025/s
. 2018-01-08 12:46:54.219 Script: Failed
. 2018-01-08 12:46:54.219 Script: Exit code: 1
. 2018-01-08 12:46:54.220 Disconnected from server