WinSCP

WinSCP 6.2.4 RC

5.19. - 2021-06-17

  • 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 - 2021-06-10

  • 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
  • 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
2021-05-06

  • 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 (s3.amazonaws.com, digitaloceanspaces.com, storage.googleapis.com) 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.
  • Translations completed: Korean and Romanian.
  • TLS/SSL core upgraded to OpenSSL 1.1.1j.
  • When opening or switching to a session whose local directory does not exist, open the nearest existing parent directory. 1951
  • Switch-like raw session settings can be configured using on/off/auto keywords.
  • Improving validation of port numbers in scripting and .NET assembly.
  • Bug fix: Parsing of multiline VMS FTP listing entries is broken. 1950
  • Bug fix: When moving files to an unvisited folder in an encrypted session, the folder contents is cached as before the move.
  • Bug fix: Failure when dropping files to a disconnected tab or duplicating to a disconnected session.
  • Bug fix: Failure when duplicating a not-yet-connected session.
  • Bug fix: Canceled or failed FTP transfer caused connection loss.
  • Bug fix: Some errors and information while opening a session in scripting were not logged. 1956
  • Bug fix: SFTP uploads are slow. 1957
  • Bug fix: Failure when S3 bucket contains a subfolder with an empty name. 1958
  • Bug fix: Cannot enter an S3 folder that only contains a subfolder with an empty name. 1959
  • Bug fix: Error when moving or copying file with non-ASCII file name using S3 protocol. 1960
  • Bug fix: Timezone is not correctly reflected in S3 timestamps.
02.02.2021

  • Compatibility with Google Cloud Storage when using S3 protocol to access the buckets. 1939
  • Bug fix: Failure when closing with no tab. 1947
  • Bug fix: Debug information is printed at the end of the scripting session when debug logging level is set even if logging is turned off. 1948
26.01.2020

Back-propagated security fixes from 5.18.1 release:

  • TLS/SSL core upgraded to OpenSSL 1.1.1i.
  • Bug fix: Prevent loading session settings that can lead to remote code execution from handled URLs. 1943
30.11.2020


  • A complete list of files that are part of a background transfer can be shown. 1785
  • Stream interface in .NET assembly. 1738
  • With SFTP protocol files can be streamed to stdout and from stdin in scripting.
  • Support SHA-256 fingerprints of TLS/SSL certificates. 1842
  • Extension Synchronize with Another Remote Server.
  • When connecting to new SSH host, its host key can be automatically accepted in scripting and .NET assembly.
  • Optional case-sensitive synchronization. 71
  • Enabled TLS 1.3 by default.
  • XML parser upgraded to Expat 2.2.10.
  • SSH core upgraded to PuTTY 0.74. It brings the following change:
    • Security fix: If an SSH server accepted an offer of a public key and then rejected the signature, WinSCP could access freed memory, if the key had come from an SSH agent. vuln-agent-keylist-used-after-free
  • Resume transfer when FTP data connection disconnects. 1878
  • Support for curve25519-sha256 KEX. 1865
  • Support for authentication using temporary credentials from AWS Security Token Service (STS). 1839
  • Support for SNI with FTP. 1895
  • Installer upgraded to Inno Setup 6.1.2.
    • Change: Installer needs Windows 7 SP1/2008 R2 SP1.
  • Alternative way to provide credentials in scripting/command-line without URL-encoding. 1821
  • Compatibility with WebDAV servers that incorrectly encode file URL. 1876
  • Optimizing S3 connection buffers for speed. 1732
  • Edited/opened files from a disconnected session can now be attached to new session even if its username was entered only during authentication instead of directly on the Login dialog. 1890
  • Returning to Login dialog, when ad-hoc connection fails. 1909
  • Local ports for active FTP mode can be limited. 958
  • Allow explicit navigation to a hidden local folder by enabling showing of hidden files and folder, if not enabled yet. 1905
  • Added full Go To submenu to context menu of panel path label
  • Automatically restore external editor defaults when changing editor command from Notepad to 3rd party editor. 1872
  • Suppress errors when opened/edited files are locked. 1832
  • Support clearing GID/UID flag on directories with new versions of GNU coreutils. 1850
  • Added /nointeractiveinput to usage screen.
  • List encrypt-then-MAC algorithms in /info listing. 1917
  • Not using a transfer via temporary file for files that would exceed system length limit with the temporary extension. 1922
  • Automatically closing timed out Session. 1923
  • Logging IANA encryption algorithm names. 1886
  • Displaying, what directory is being read at the end of login to a server, in a tooltip. 1916
  • Use dark window title for the main window in the dark mode on Windows 10 2004. 1920
  • Clarified that WinSCP may crash in the warning message when trying to load too big file into the internal editor. 1847
  • Do not prevent WinSCP from working when jump list cannot be updated. 1857
  • Allow forcing use of LIST command to retrieve file information in scripting for FTP servers that has broken support for MDTM/SIZE commands. 1921
  • Duplicate and Rename commands work even for disconnected sessions.
  • IPv6 literals with scope or literals that are already escaped in square brackets are formatted standardly in session URL (instead of URL-encoding them).
  • Allowed longer input on Edit file input box. 1911
  • Added help link to Add extension box and making the box wider.
  • GSSAPI key exchange authentication can be turned on. 1863
  • When trying to open an inaccessible local directory, display an error message, instead of silently doing nothing.
  • Cleanup application data dialog labels cache cleanup checkbox label updated to reflect previously updated functionality.
  • Disabling tips controls until some tips are actually available.
  • Optionally disable moving using drag&drop. 1884
  • Main window follows Login dialog to another monitor, when switched using keyboard shortcuts Shift+Win+Left/Right. 1907
  • When path to an existing local directory is specified on the Download options dialog without an operation mask, a noop operation mask is implied.
  • Workaround for wrong description of Num * keyboard shortcut in menus with German keyboard. 1889
  • Files with the same name except for a letter case are sorted deterministically. 1894
  • Not offering pasting from clipboard on the file panels if the clipboard contains multi-line text.
  • Removed the “compression” indicator from the status bar.
  • Extending transfer dialog drop down menu size to 16 entries.
  • Bug fix: Local file panel ignored changes in latter case of files and folders. 1885
  • Bug fix: Local custom commands that need session but no remote files were not disabled when session was not connected.
  • Bug fix: Correct letter case variant of remote directory in directory tree was not always selected. 1891
  • Bug fix: With no connected session, shared bookmarks modifications are not preserved.
  • Bug fix: Using list header color appropriate for the actual light/dark column background color (list headers are not dark, unless system wide app dark mode is enabled).
  • Bug fix: Session.ParseUrl cannot accept fingerprint parameter for sessions over TLS. 1925
  • Bug fix: Custom command patterns !S/!E do not include fingerprint of TLS certificate.
  • Bug fix: Cannot work with filenames ending with space with FTP protocol. 1900
  • Bug fix: Canceling remote path drop down did not reset it back to the current path.
  • Bug fix: Folders in a drive root showed incorrect type name sometimes.
  • Bug fix: Customizing custom commands from Synchronization checklist window was not working. 1908
  • Bug fix: Whole local drive could have been scanned when trying to browse to non-existing or hidden folders.
  • Bug fix: Timed out status bar note was not added to history popup box, while a session is disconnected.
  • Bug fix: Duplicate command in remote file context menu operated over selected files instead of the focused file.
  • Bug fix: *nix shell special characters were unintentionally escaped in PuTTY/SSH terminal command patterns. 1906
20.11.2020
  • Translation updated: German.
  • Bug fix: Failure when using S3/AWS access ID or region longer than 32 characters. 1914
  • Bug fix: Failure when opening some menus while having long text of specific length copied to the Clipboard. 1915
  • Bug fix: Failure when directory contains a file with too long name. 1924
15.10.2020
  • TLS/SSL core upgraded to OpenSSL 1.1.1h.
  • Allow using Windows Store apps aliases as terminals (particularly Windows Terminal). 1901
  • Limiting error report and message search URLs to 4 KB, as larger URLs fail to open in some browsers.
  • SSH private key tools (PuTTYgen and Pageant) upgraded to PuTTY 0.74.
  • Bug fix: Session.CompareDirectories handles incorrectly files with names containing reserved XML characters. 1897
  • Bug fix: Keep local directory up to date extension fails if error occurs before session URL is parsed.
  • Bug fix: SFTP uploads started over already disconnected session do not reconnect automatically. 1913
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