Recent Version History

This is a full list of changes for each release of WinSCP. See also Project history and Incompatible changes between versions.

6.0 (not released yet)

  • Local file manager mode (two local panels). 1893
  • Ongoing delete operation can be moved to background queue. 194
  • Showing directory size in file panel. 41
  • Tab titles are shortened to fit window width as needed. 1423
  • Tabs show tooltips with full session name and paths.
  • Remembering remote directory tree nodes state when switching sessions. 1057
  • Shift-clicking New Session command opens the Login dialog in new WinSCP instance, instead of possibly opening new instance of workspace.
  • When switching tabs, prevent visibly scrolling the panels when focusing the last selected file.
  • Removed the “compression” indicator from the status bar.
  • Allowed normal behavior of double-click on a file even when resolving of symlinks is disabled. 2037
  • Session.ExecutablePath returns detected or actual executable path when not set. 2055
  • Change: Keyboard shortcut for Command Line command changed to Shift+Ctrl+M (Shift+Ctrl+N previously).


5.20.3 (not released yet)

  • Translations completed: Catalan, Czech, Dutch, Finnish, French, German, Hungarian, Italian, Japanese, Korean, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Traditional Chinese, Turkish and Ukrainian; and updated: Vietnamese
  • Streaming support in .NET assembly and scripting for FTP protocol. 1945
  • Improved compatibility with MVS systems. 2069
  • New .NET assembly method Session.TryGetFileInfo. Thanks to @RachamimYaakobov. 2068
  • Expanding environment variables in Open Directory/Location Profiles dialogs in local paths. 909
  • Optimized loading of large directories. 1631
  • TLS/SSL core upgraded to OpenSSL 1.1.1o.
  • Installer upgraded to Inno Setup 6.2.1.
  • When group (Site/Shared) to which new location profile is added is changed, switching the page to the target group.
  • Preventing occasional exhaustion of resources while testing WinSCP executable version on repeated use of .NET assembly. 2075
  • Bug fix: Capabilities of S3 sessions were not shown.
  • Bug fix: Misplaced warning about unused scripting parameters when /rawsettings command-line switch is used. 2070
  • Bug fix: File panels malfunction when files are dropped from other application to it. 2071
  • Bug fix: When logging transfer statistics, recent transfer speed was logged instead of average speed of whole transfer. 2073

5.20.2 beta

  • Translations updated: German and Vietnamese.
  • SSH core upgraded to pre-release build of PuTTY 0.77.
    It brings the following changes:
  • TLS/SSL core upgraded to OpenSSL 1.1.1n.
  • WebDAV core upgraded to neon 0.32.2.
  • XML parser upgraded to Expat 2.4.8.
  • Allowed uploading edited files over encrypted session. 1989
  • Building .NET assembly in Visual Studio 2019.
  • Optionally not flashing taskbar button when WinSCP needs attention while in the background. 2067
  • In .NET assembly or scripting with “nul” configuration, when WinSCP registry key does not exist, do not write statistics to INI file. 2066
  • New less prominent icon for Quit command.
  • Bug fix: Failure when attempting to switch to an unconnected sessions using keyboard shortcuts while another session is being connected.
  • Bug fix: Removing all custom commands resets the default ones when INI file is used. 2059
  • Bug fix: Failure when changing remote folder using directory tree while previous directory is still loading. 2060
  • Bug fix: Drive that was ever opened in local file panel cannot be safely removed until WinSCP is closed. 2061
  • Bug fix: “Optimize connection buffer size” checkbox was disabled for S3 although it has effect for the protocol. 2058
  • Bug fix: Custom commands menu fail to open. 2062
  • Bug fix: Local drive menu does not reflect some changes. 2063
  • Bug fix: Using drive menu to change to an invalid drive fails silently.
  • Bug fix: Scripting command ls in FTP session displays timestamps without year even if the server (notably IIS) provided the year, if it did not provide seconds. 2065


5.20.1 beta

  • File masks relative to the root of an operation. 2052
  • Private key can be provided as string in .NET assembly and scripting. 2044
  • Support for importing key files that are specified using home ~ prefix from OpenSSH config file. 2053
  • Translation updated: German.
  • TLS/SSL core upgraded to OpenSSL 1.1.1m.
  • Commands that do not fit on Custom Commands toolbar are presented in drop down menu, instead of a horizontal bar. 554
  • First hiding right-most Custom Commands toolbar commands that do not fit.
  • Prevent hang when dragging files without drag&drop shell extensions when some mapped network drive is not available. 2054
  • Added new ap-southeast-3 AWS region.
  • XML parser upgraded to Expat 2.4.2.
  • Bug fix: When initial remote directory specified in the open command does not exist, the error was silently ignored.
  • Bug fix: File color rules with path mask do not work for local files.

5.20 beta

  • Support for ACL for S3 protocol. 1641
  • SSH core upgraded to PuTTY 0.76. 1984
    It brings the following changes:
    • Support Curve448 key exchange method. curve448
    • Support Ed448 user and host keys. ed448
    • Support rsa-sha2-256 and rsa-sha2-512 SSH public key algorithms. 1952 rsa-sha2
    • Change: SHA-256 fingerprints are not padded anymore.
  • It is possible to import sessions from OpenSSH config file. 1896
  • Change: Removed support for SSH-1.
  • Optionally keeping symbolic link name in path instead of resolving it with SFTP protocol. 81
  • Improved shortening long paths, when single level name is too long on its own. 2043
  • WebDAV core upgraded to neon 0.32.1.
  • Allow displaying all VMS file revisions with FTP protocol. 1944
  • Support reading S3 credentials from AWS CLI configuration. 1941
  • Bytes transferred are recorded in XML log and available in .NET assembly API. 597
  • Generating PPK3 keys.
  • It is possible to copy information to the clipboard from the Properties dialog.
  • Made WinSCP.exe be deployed even when WinSCP NuGet package is included as transitive dependency. 2017
  • When performing a single-item atomic operation, displaying indeterminate progress status.
  • S3 Security token session option renamed to a more appropriate Session Token.
  • Not resetting protocol to WebDAV when S3 protocol is selected and HTTP URL is pasted on the Login dialog. 2045
  • Automatically reconnect when FTP server fails to open data connection, if it previously worked. 2046
  • Confirm closing when multiple tabs are opened and auto workspace saving is not enabled, even when none of the tabs contain an active remote session.
  • Including host key of tunnel session in generated code. 2006
  • Support for custom certificate store files with configurable path. 2034
  • Allowed providing tunnel private key passphrase in scripting. 2029
  • Improved handling of long shell command error messages. 1949
  • Considering global passive/active mode settings when importing sessions from FileZilla
  • Automatically retry when S3 transfer fails with 503 code (Slow down or Service unavailable). 2047
  • Improving formatting of errors displayed after an operation completed in Continue on error mode.
  • Shift+Ctrl+R keyboard shortcut for Reconnect Session command.
  • Change: Keyboard shortcut for Restore Selection command changed to Shift+Ctrl+S (Shift+Ctrl+R previously).
  • Change: Monitoring A: and B: drives. 2014
  • Preventing beep when using Alt+Enter to open the Properties dialog.
  • When collecting list of files for background transfer, say “Listing” instead of “Calculating” not to give an impression that it is a superfluous operation. 2026
  • Checking for too many parameters with /keygen switch.
  • PNG code upgraded to PngComponents 1.7.0.
  • Warning when selecting too new key file.
  • Warning when opening more than 100 tabs. 1997
  • Including HTTP message into S3 error message.
  • Bug fix: Do not say “Terminated by user” when the session has actually timed out.
  • Bug fix: Cannot use passwords and passphrases longer than 255 characters in automation and various other purposes. 1988
  • Bug fix: When size of a file downloaded with FTP protocol changes (or when ASCII mode is used) the logged size did not reflect the actual transfer size.
  • Bug fix: When connecting disconnected session the directory might be loaded twice.
  • Bug fix: Failure when entering directory that contains file with a slash in its name. 2016
  • Bug fix: When S3 authentication region changes during session, previously visited buckets from the original authentication region could not be accessed anymore. 2027
  • Bug fix: Failure when using multiple connections with local proxy command. 2028
  • Bug fix: Configuration import did not remove old sites and did not load all GUI settings. 2040
  • Bug fix: When S3 transfer fatally fails, error details were lost.


5.19.6 (hotfix)

  • Translation updated: German.
  • Back-propagated fixes from 5.20–5.20.2 releases:
    • TLS/SSL core upgraded to OpenSSL 1.1.1m.
    • XML parser upgraded to Expat 2.4.6.


  • Compatibility with Google Cloud S3 API when duplicating files. 2038
  • Compatibility with Google Cloud S3 API when deleting implicitly existing directories. 2042
  • Translation updated: Turkish.
  • Logging a reference to 1952 when an OpenSSH 8.8 (or newer) server refuses the key.
  • Bug fix: Crash when new contents is copied to the clipboard while downloading files pasted from the clipboard. 2036
  • Bug fix: Browse Remote Directory command on Synchronization checklist did not locate file with spaces.
  • Bug fix: Extension ZIP and Upload does not work with files in a drive root. 2039
  • Bug fix: Path on Console window was not shortened when it did not fit.


  • Translation updated: Hungarian.
  • Showing release date on the About dialog.
  • Support for custom certificate store files. 2034
  • Allow other 2xx responses to PWD command, not only the standard 257. 1768
  • Bug fix: When there are both site folder and site with the same name and the site was selected when closing the Login dialog, when reopening, the folder was selected instead.


  • Translation updated: French.
  • TLS/SSL core upgraded to OpenSSL 1.1.1l.
  • Using Documents folder when the last used local directory in Explorer interface does not exist anymore. 2011
  • Bug fix: TLS session resumption is not working for subsequent FTP transfers with TLS 1.3 when the server requires reuse of the session of the previous transfer. 2018
  • Bug fix: Cannot access S3 bucket root when the access policy checks for empty prefix. 2021
  • Bug fix: Response from ProFTPD FTP checksum commands is not recognized. 2023
  • Bug fix: Failure when submitting prompt with “Never ask me again” selected. 2022
  • Bug fix: Panels are drawn incorrectly after toggling Full row select. 2025
  • Bug fix: Timeout while uploading files to some FTP servers using TLS 1.3. 2030
  • Bug fix: Incomplete listing for S3 servers that indicate truncated listing after the contents and whose pagination is a multiple of 8 (e.g. Backblaze). 2032



  • Translation completed: French.
  • Restored compatibility with FTP servers that return malformed cdir and pdir entries in directory listing. 2004
  • Fix from PuTTY 0.76: Avoid crash in MIT Kerberos for Windows on session restart.
  • SSH private key tools (PuTTYgen and Pageant) upgraded to PuTTY 0.76. It brings the following change: After 30 or so simultaneous sessions, Pageant stops working. win-pageant-max-connections
  • Bug fix: Empty local drive could not be entered. 2000
  • Bug fix: TLS settings in default site settings is not restored when opening Login dialog in some cases. 2001
  • Bug fix: Memory leak when deleting completed background transfers.
  • Bug fix: Hang when running under Task Scheduler or a similar service with session logging enabled. 2005


  • Translation updated: Italian.
  • Incrementing port numbers for secondary connections of tunneled sessions with fixed forwarding port number. 1996
  • Bug fix: Failure when automatically opening a workspace on startup with too many sessions. 1997
  • Bug fix: Failure when reading a key file without a trailing newline. 1998
  • Bug fix: Failure when SFTP server resolves . path to an empty string. 1999


  • When installing an extension from a URL, not saving the extension with BOM.
  • Not aborting “Keep remote directory up to date” function when connection is lost while deleting files or looking for differences and the session is reconnected. 1994
  • Bug fix: When handling URL in an existing WinSCP instance, session settings from a stored site named after the URL hostname are not used. 1992
  • Bug fix: It was possible to move toolbar on progress windows.
  • Bug fix: When installing an extension from a file, it is always saved in UTF-8 with BOM, disregarding the original encoding. 1993
  • Bug fix: When “Keep remote directory up to date” function was started from command-line, disconnects were not detected.
  • Bug fix: When connection was lost and not reconnected, the “Keep remote directory up to date” window was not closed.

5.18.6 RC

  • XML parser upgraded to Expat 2.4.1.
  • Installer upgraded to Inno Setup 6.2.0.
  • Using multipart uploads with S3 protocol on Google Cloud as it is supported there now.
  • Bug fix: Broken layout of Properties dialog when opening on a secondary display with high DPI primary display. 1990
  • Bug fix: The “Drag & drop shell extension” installation component was not showing its size.
  • Bug fix: When saving a local file, the “Saving” status on the Internal editor status bar is never cleared.
  • Bug fix: No error message is sometimes shown when SFTP server disconnects. 1991


5.18.5 RC

  • Translation updated: Farsi.
  • Support for PPK version 3 keys from PuTTY 0.75. 1986 ppk3
  • SSH private key tools (PuTTYgen and Pageant) upgraded to PuTTY 0.75. It brings the following changes:
    • Pageant now supports loading a key still encrypted, and decrypting it later by prompting for the passphrase on first use. pageant-deferred-decrypt
    • Upgraded default SSH key fingerprint format to OpenSSH-style SHA-256.ssh-fingerprint-formats
    • PuTTYgen now supports alternative provable-prime generation algorithm for RSA and DSA.
    • Replaces Windows Pageant’s IPC with named pipes. pageant-named-pipe
    • Bug fix: PuTTYgen mis-writes OpenSSH private key format for some Ed25519 keys. openssh-ed25519-corrupt-private-key
  • Bug fix: Moving a transfer to background just in between two individual file transfers cancels the transfer. 1983
  • Bug fix: Files saved in external editors are not uploaded in timezones behind UTC. 1985
  • Bug fix: Sort > By Type icon for was still incorrect.

5.18.4 RC

  • TLS/SSL core upgraded to OpenSSL 1.1.1k.
  • XML parser upgraded to Expat 2.3.0.
  • The enumerable returned by Session.EnumerateRemoteFiles implements the interface implicitly to allow access to the interface method (GetEnumerator) from late-bound languages, like PowerShell.
  • Disabling multipart uploads with S3 protocol on Google Cloud they are not supported there. 1972
  • Allow downloading a file from an FTP server via a symbolic link in scripting or when handling a URL. 1973
  • Allowing use of the stream returned by Session.GetFile from a different thread. 1978
  • Workaround for specific encoding of special characters in filenames by OneDrive WebDAV interface. 1824
  • https:// URL with known S3 API hostname (,, is interpreted as S3 protocol, instead of WebDAV.
  • Automatically resume transfer when TLS re-key fails. 1982
  • Translation updated: German.
  • Bug fix: Ignoring disconnect messages from the server while closing the connection. 1977
  • Bug fix: Preventing another application (or WinSCP instance) stealing the selected tunnel port. 1971
  • Bug fix: Hang after receiving multiline response from FTP server. 1963
  • Bug fix: Sort > By Type icon for was incorrect.
  • Bug fix: Keyboard cues were shown in toolbar buttons drop down menus even when the menu was dropped down with mouse.
  • Bug fix: Failure when connecting to FTPS server that supports client certificates with translation that uses multi byte encoding. 1966
  • Bug fix: Remembered password is forgotten after the first failed (re)connect, even if the failure did not involve the password. 1967
  • Bug fix: Problems with port forwarding are not detected. 1970
  • Bug fix: Potential failure when waiting for a command executed from Console window is aborted.
  • Bug fix: When saving a site with a slash in the username, it is misinterpreted as a site folder.
  • Bug fix: DST start or end causes edited/opened files to be uploaded. 1974
  • Bug fix: Failure when retrieving a directory listing from an FTP server when the data are transmitted in huge amount of tiny chunks. 1976
  • Bug fix: Some operations with relative paths (notably creating and deleting a subdirectory) were failing on encrypted session.
  • Bug fix: Local > Go to > Explore Directory was not working with focused remote panel.
  • Bug fix: A workspace session opened from a stored site could not be used for operation in a new window or duplicated.
  • Bug fix: Error when uploading an empty folder in the foreground or any folder in the background to an FTP server with permissions configured.
  • Bug fix: Adding new background transfer while queue processing is disabled and some parallelized transfer was already started results in “waiting” items being endlessly added to the queue list.


Older versions

Last modified: by martin