VNC® documentation

  1. 4.6.3, released 19th August 2011

    • Mac OS X

      • FIXED: Connections can now be established to a Mac OS X 10.7 (Lion) computer whose display is asleep (lower of the two sliders in the System Preferences > Energy Saver pane). Note connections cannot be established if the computer itself is asleep.
  2. 4.6.2, released 11th August 2011

    • Mac OS X

      • NEW: Mac OS X 10.7 (Lion) support.
      • Connections to VNC Server in User Mode can now be maintained, and new connections established, on switch out by turning off the StopUserModeOnSwitchOut parameter (Mac OS X 10.6 or earlier only; not supported under 10.7 Lion).
      • Improved performance for connections to VNC Server in User Mode can now be maintained, and new connections established, on switch out by turning off the StopUserModeOnSwitchOut parameter (Mac OS X 10.6 or earlier only; not supported under 10.7 Lion).
  3. 4.6.1, released 8th March 2011

    • All platforms

      • FIXED: Mouse movement no longer appears jerky or affects performance when connected to Windows host computers.
      • FIXED: Re-opening the Chat - VNC Server dialog now retains user names and distinguishing colors.
      • FIXED: File transfer no longer occasionally fails due to issues assigning file permissions.
      • FIXED: VNC Viewer no longer appears to offer authenticated connections to proxy servers. Note that support for proxy authentication may be the subject of a future release.
    • Windows

      • FIXED: Changing the color quality of a host computer desktop running VNC Server in Service Mode with the Mirror Driver enabled (the default behavior) no longer blanks, or stops updating, the display.
      • FIXED: Setting the VNC Server in Service Mode Log and LogFile parameters now successfully logs to a file in a privileged directory.
    • UNIX

      • FIXED: VNC Address Book no longer crashes if the Enter Master Password dialog is cancelled while exporting a protected connection.
    • Mac OS X

      • NEW: The VNC Server Monitor parameter displays a particular monitor rather than the whole desktop.
      • FIXED: Connections to Mac OS X host computers with multiple monitors now work however monitors are arranged.
      • FIXED: Using chat no longer causes the display to flicker when connected to Mac OS X 10.5 or 10.6 host computers. For 10.4 host computers, set the VNC Viewer UseDisplayCapture parameter to false.
      • FIXED: The Chat - VNC Server dialog now exits gracefully if VNC Server is stopped.
      • FIXED: Setting the VNC Server Log parameter to redirect logging output no longer overwrites the original log.
      • FIXED: VNC Server in User Mode now starts if the user's home directory is not on the local file system.

    4.6.0, released 20th December 2010

    • All platforms

      • NEW: Connections can be secured end-to-end using 256-bit AES encryption.
      • NEW: JPEG and JRLE encodings for the VNC Viewer preferredencoding parameter compress pictures more efficiently for improved performance over low bandwidth connections.
      • NEW: Zlib encoding for the VNC Viewer preferredencoding parameter improves the performance of connections to Mac OS X computers running Apple Remote Desktop/Remote Management.
      • NEW: Separate private keys are automatically generated when VNC Viewer and VNC Server start.
      • NEW: Multiple host computers can be specified at the VNC Viewer command line, and connections attempted in turn until one succeeds. Or all can be established at once using the connectinparallel parameter.
      • NEW: Alpha-blended cursors are supported.
      • NEW: VNC Server connection notification messages can be turned off.
      • NEW: VNC Server notifies when chat messages are received if the Chat - VNC Server dialog is minimized.
      • Streamlined file transfer mechanism and user interface.
      • VNC Server can now be restricted to IPv6 network addresses for the host computer by setting the InTransports parameter to just IPv6. In addition, invalid values for this parameter now prevent connections.
      • Corrupt or missing private keys can no longer be regenerated from the UI.
      • Printing formats have changed, and dependencies removed. See the Windows section for implications.
      • VNC Server now warns if a password specified for the VNC Password authentication mechanism is shorter than six characters.
      • Blacklisting now only affects client computers whose users fail to authenticate, enabling utilities such as ping to work.
      • Many dialogs and message windows have new and more consistent titles.

      Windows

      • NEW: Full Windows 7 support.
      • NEW: Executable files are Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR)-enabled for improved security on appropriate operating systems.
      • VNC Enterprise Edition no longer supports Itanium processors.
      • VNC Server for Windows in User Mode now displays a black screen when the host computer's desktop cannot be accessed, instead of terminating connections (for example, when a UAC prompt is displayed, or when the host computer is locked).
      • Printing formats have changed. This means VNC Viewer 4.6 cannot print host computer files from VNC Server 4.5 for UNIX/Linux or Mac OS X.
      • FIXED: Printing formats have changed. This means Standalone VNC Viewer 4.6 can now print host computer files from VNC Server 4.6 for UNIX/Linux or Mac OS X (but not VNC Server 4.5).
      • FIXED: Command line parameters specified when starting VNC Viewer are now inherited (when a new connection is established using the New Connection toolbar button, for example).
      • FIXED: Command line parameters specified when starting Listening VNC Viewer are now respected.

      UNIX

      • NEW: Fedora 11–13, Ubuntu 10.04 (LTS) and 10.10, and SUSE Linux Enterprise Server and Enterprise Desktop 10–11 support.
      • NEW: The VNC Server icon can be hidden until a connection is established by setting the DisableTrayIcon parameter to 1.
      • NEW: Under operating systems on which no VNC Server icon can be shown (such as Solaris), shortcut menu commands are available from a Commands button on the VNC Server dialog.
      • VNC Enterprise Edition no longer supports Itanium processors.
      • Versions of VNC Server for 64-bit architectures now depend on libstdc++6 rather than on libstdc++5.
      • FIXED: Even if the VNC Server BlacklistThreshold parameter is set to 0 to turn off blacklisting, an attacker can no longer make unlimited attempts to guess a user's password under system authentication.
      • FIXED: Closing the vncconfig window no longer quits that application.

      Mac OS X

      • NEW: VNC Enterprise Edition can be installed silently from a script. See the Knowledge Base for more information.
      • NEW: VNC Enterprise Edition 4.6 can be downgraded to an earlier version.
      • NEW: The scroll wheel on a client computer mouse can be made to scroll Windows and UNIX/Linux host computer applications more appropriately by setting the ScrollWheelAccel parameter to No.
      • NEW: Unusual characters and symbols can be sent to host computers from the Special Characters dialog, available from the VNC Viewer Edit menu.
      • The VNC Viewer and VNC Server user interfaces have been improved and made more consistent with those of other platforms.
      • FIXED: Even if the VNC Server BlacklistThreshold parameter is set to 0 to turn off blacklisting, an attacker can no longer make unlimited attempts to guess a user's password under system authentication.
      • FIXED: Command line parameters specified when starting Listening VNC Viewer are now respected.
      • FIXED: VNC Server now inteprets AltR+char key combinations correctly.