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Minimum OS: Windows 7  



- Security fix
- SC 2.0 load ini changes
- Patch Handle "Z_STREAM_END" in zlib stream decompression
- Patch Adding key mapping logic for "Korean/English" transition key
- DNS lookup take to long, log back by ip address
- Patch extra logging added
- Display fix (sometimes the resolution was wrong initialized)
- Allow/Reject host filter fix


binary.png ultravnc 1409 X86 setup

UltraVNC distribution for 32-bit operating systems.
virtual displays win10
Mirror driver <= win7


GNU/GPL link_extern.gif 2023-03-09 English Windows 4.57 MB 26,117 Download

binary.png ultravnc 1409 X64 setup

UltraVNC  distribution for 64-bit operating systems.
Auto Operating system selection

Virtual displays require server win 10
ddengine capture win 10
mirror driver <= win7

GNU/GPL link_extern.gif 2023-03-09 English Windows 5.1 MB 65,066 Download


binary.png ultravnc 1409 msi X64

UltraVNC distribution for 64-bit operating systems.

GNU/GPL link_extern.gif 2023-03-11 English Windows 7.2 MB 6,135 Download

binary.png ultravnc 1409 msi X86

UltraVNC distribution for 32-bit Windows 

GNU/GPL link_extern.gif 2023-03-11 English Windows 6.13 MB 1,200 Download

Zipped binary's 32/64

zip.png ultravnc bin zip

Changed bins for  32/64

GNU/GPL link_extern.gif 2023-03-09 Windows 5.14 MB 6,161 Download

SC 2.0

SC_2.0 test
Use https://support1.uvnc.com/cgi-bin/upload12.pl to generate SC 2.0

Zip can contain (SC_Server_ClientAuth.pubkey, helpdesk.txt SC_20.ini background.bmp logo.bmp)

1) Start normal winvnc.exe, select encryption SecureVNCPlugin.dsm and generate keys.
rename pubkey to SC_Server_ClientAuth.pubkey and viewer key to SC_Viewer_ClientAuth.pkey
2) Upload zip and download SC
3) Run vncviewer (make sure the viewer key is in the same folder), select encryption and start listener

The sample use the localhost, so server connect to viewer running on the same host (replace localhost in helpdesk.txt to connect to a real external host)
Check helpdesk.txt and SC_20.ini in sample to see how to add it.

Test files
Viewer key used in sample
https://www.uvnc.eu/download/1400/SC_Vi ... tAuth.pkey
Replace the keys by your own, private key is now public... Only for testing.





* UltraVNC - Latest modifications - History
- security fix
- SC2.0 load ini changes
- patch Handle "Z_STREAM_END" in zlib stream decompression
- patch Adding key mapping logic for "Korean/English" transition key
- DNS lookup take to long, log back by ip address
- Patch logging added
- Display fix (screen change while connected)
- Filter to allow hosts is not working
- Some options were not saved
- installer
- No changes
- long viewer hostname fix
- Plugin 64 bit Fix
- Notification Fix

- Compatibility issue's
- A lot smaller bug fixes
- sc_promt/sc_exit options cause connect failure
- viewer dpi fix
- security fix CVE-2022-24750

- warning about untrusted server can be disabled

- trayiocon fix
- Fix multiple cursors when not selected
- installer update
- Fixed some installer issue.
- Silent is not needed
- Upgrade is not needed
- Plugins are installed with server/viewer
- The menu is always installed, the desktop icons are optional (like other installers do)
- Revert "update zipunzip 6.0"
- notification as OSD
- border and black screen is not supported on all OS’s, added OS check
- Fix Tight color issue
- Border with OSD
- update zipunzip 6.0
- Fix border
- xz library update 5.2.5
- update libjpeg-turbo 2.1.2
- update SDK
- Fix loading options
- Security update
- Impact: viewer without dsmplugin who makes a connection to a fake vnc server
- The warning popup didn’t had a cancel when server hostname was to long.
- prevent memory overrun by encoders by doing some bound checking.
- use lzo safe function calls
- Optional notification message is also added to the accept/refuse query dialog, see: https://uvnc.com/docs/documentation-1-3-0/144-user-notification.html

- Remote screen blanking back working on windows 10
- Optional notification popup on server pc. Can be set on viewer pc.
- Optional red band around the screen while connected
- TigerVNC Cursor fix, Cursor Shape
- Add menu for snapshot
- Viewonly has priority
- Accept/Refuse prompt while Windows is locked
- Add custom ini to serviceThere are two limitations though:
1. No spaces in ini file path (escaping does not work)
2. service_commandline option with -inifile argument must be present in ini file himself
- Fix Hibernation stopping the service
- Reverse connection use default authentication

- rdpmode fix
- size/position/dpi update
- security fixes
- AdjustWindowRectExForDpi fix
- scaling changes
- Prevent service to restart vnc desktop part when Shutdown has been initiated
- Better result for scaling  200% or 300%
- delete (remove MRU + delete optione files + reset to default)
- High dpi_aware

- vnc4server patch update
- Fix connection issue with vnc4server in 32 bit color depth.
- Fix broken screen color with vnc4server in 32 bit color depth.
- Fix broken mouse cursor color in 16 bit color depth.
- Fix corruption along mouse cursor trajectory
- Fix broken background color in 24 bit color depth (vncviewer)
- Fix TightEncode
- Fix TigerVNC
- rdpmode fix
- cleanup old code
- Zstd 1.5.0
- Possible crash fix (minidump analyse)
- winpe fix
- zlib fix
- multimouse option
- Maxviewers
- multiple mouse pointers
- On remote resize, left/top of viewer isn't move
- fix  scale to windows size
- last mouse click viewer has controle
- On remote resize, left/top of viewer isn't moved
- Use singleton for osversion
- Disbale touchscreen input when mouse is disabled
- Add noacceleration build options
- Scrollbar fix
- ddengine/scrollbar/ initial cursor ??
- Scrollbar fix
- viewer maximize/minimize/restore
- Fullscreen fixes
- span multiple monitors
- Allow minimize for non spanned monitors
- createpasswd (secure mode)

- TigerVNC compat fixes
- Modify Extended clipboard for TigerVNC
- Fix tigerVNC extDesktop compat issue's

- Updated viewer ui interface
- bug fixes
- extended desktop: show only extended, allow multiple extended displays
- performance update for ddengine with multi monitors
- moved driver install to installer

- Updated viewer ui interface
- bug fixes
- extended desktop , better multi monitor support
- Zrle +Filetransfer crash fix
- Chat crash fix
- memory leak fixed
- security fix
- Zstd added [v] use zstd instead of zlib
- zlib update
- High dpi cursor offset fix
- reported 123 bugs fixed
- incoming data from server to viewer and invers is extra checked for code injection by fake viewer or servers. Were possible, functions are replaced by there security enhanced counterpart
- made international keyboard path option
- jpg encoder use master frames
- prevent screen lock while connected
- Viewer changes
- settings are now server based
- tab option screen via expand button

- cleanup compiler warnings
- redraw full screen after fullscreen
 -mouse position correction multi monitor
- uvnc_settings.exe (check mirror driver)
- delete race condition invers connection
- using reconnect thread, better repeater behaviour
- ddengine fix when screen resolution change online
- SDK win10 fix for VS 2017
- security fixes: Thanks to Pavel Cheremushkin
ddengine update flashing cursor + performance
- added performance mode, activated when max cpu is set to 100
- update jpeglib to 2.0.0
- update zlib 1.2.11
- Accept box and UAC fix
- Header changes for gcc
- save query accept settings
- Desktop size incorrect after service logon screen with multi monitors
- secondary from ini not handled correctly after login screen
- Fixed File Transfer of mapped network drives. CreateFile called in different thread than ImpersonateLoggedOnUser
- hang by secondary=1 in ini
- Window sizing by auto scaling correct
- Window update after fullscreen
- ddengine systay hint, shows when when ddengine isn't used
- fixed driver activation (bug
- mirror driver “check driver” button fixed
- OS detection always detected win8 on win8>=, added new code to proper detect win10
- FileTtransfer and repeater bug fix (transfer broke on to slow connections)
- faster initialization
- multi monitor
- change ddengine for multimonitor on single video card
- Dual screen / triple screen with mirror/ddengine/blit
- mouse ccorinates
- added Delay query window after restart (to avoid multiple querywinodw accepts), server option
- added server option to enable/disable uvnckeyboardhelper.exe in win8
- win10 fixes
- Single exe for wp-win10
- better multi monitor support
- ultra2 encoder optimized
- ddengine for win8>=
- disconnect fixes (Jan 2018)
- XP fixes
- repeater security fix
- File Transfer fixes
- temp path
- XP libs
- Keepalive
- Seperated thread for FT (Sept 2017)
- Fixes
- bad connection caused by clipboard transfer during connection
- reconnect viewer failed (June 2017)
- Faster FT
- Fixed FT from winvnc to vncviewer if winvnc is running as service
- Better windows 10 support
- jpeg lib update (April 2016)
- Vnchooks: make sure the correct versions are attached, some older crashed

- black screen on connection/ grey screen on connection and deadlock
- on disconnect server icon stayed yellow, blocking new connections
- black viewer with icons without file transfer.
- fixed mem leaks/resource leak

- Fix overrun crash
- Timeout reconnect fix
- Closing no reconnect fix
- Auto refresh after idle
- Update jpeg lib (January 2016)
Server: added rdp session select
Server: added alternate shell when you use another shell the explorer.exe it doesn’t work correct


Viewer: added remember last location (host based)
- UVNC_LAUNCH: added
- Fixes

Artifacts on win8>
- Faster reconnect on session switch
- Repeater:reconnect, some port scanners could kick connections, stability (November 2015)
- added XZ encoder (small bandwidth)
- crash fix
- auto mode: better initial settings to avoid coder switch on start
- fix 10 second delay win8 with keyboardhelper
- w8hook embedded
- option Gii encoder adde
- memory leaks
- added tight encoder patch from Turbovnc project
- reconnect timeout in invers mode was increasing on each try, max set to 3 minutes
- crashes detected by crashrpt fixed (June 2015)
- fix timeout multiple viewers
- scale server window, also when directx is not available
- fix multiple initial screen sends
- fix win8 and w8hook loop/hung high cpu
- added dpi aware for viewer (Dec 2014)
- add viewer idle timer
- add server id to password box
- server deadlock fixed (existed already for 2 years)
- server tray install/uninstall/start stop service
- minimize viewer and high cpu
- save plugin options corrected
- update uvnc_settings.exe (added new settings, help pages, service buttons)
- update repeater (could be locked by port scans) (Nov 2014)
- Save config plugin fix
- clipboard deadlock
- allow filetransfer when file is open
- sdtime removed (performance)
- alt-grf win8 fix (Aug 2014)
impact: all pre versions
exploit: localuser (guest) can gain local admin access on win8
- viewer portable
- you can set a single port java/rfb
- server deadlock fixes for slower connections
- ignore cursor when not in view window (crashed java viewer)
- fast keyboard input could cause 100% cpu usahe on win8, fixed (Aug 2014)
- service, fix error 1314, server sometimes failed to start desktop part and closed winvnc.
- security: increase timeout after each wrong password to make brute force hacking harder
- color correction 16bit and mirror driver
- memory leak with mirror driver fixed in previous fix J
- save setting permission fix
- added support for new repeater with keepalive
- tooltip buffer overrun fix, cause server to fail when sting in systray was to long (multiple ethernet card. Long hostnames etc…) (Dec 2013)
- auto alpha blending based on OS
- zrle deadlock fix
- tight encoding fixed
- show screenbuildup on first run
- server fix bug that crashed iexplorer 8 (Okt 2013)
- viewer mod for vmware (wrong colors)
- update lijpeg-turbo to 1.3.0 (Aug 2013)
- Missing screen  refresh  (when driver selected but not used)
- Factory reset (when temp was not writable) (Aug 2013)
- Mirror driver and begative screen coordinates (left secondary desktop) (May 2013)
- fixed change ip detection, sometimes server was disconnected after a few seconds by a false positive
- new installer xp64 wasn’t supported (April 2013)
- Viewer timeout option grayscreen fix
- server leaks fixed (March 2013)
- server crash
- server grayscreen on startup loop fixed (March 2013)
- filetransfer bug fix (x64) (March 2013)
- autoreconnect and auth fail fix
- viewer with option window open fails to close
- viewer messagebox sometimes hidden behind window (March 2013)
- deadlock softcursor fixed (viewer) (March 2013
- u2 encode on 16 color display crash
- fullscreen bar center
- recoonect set by default (March 2013)
- Fix server /NULL crash
- Fix radio button u2 viewer (March 2013)
- fix lock after gray screen (March 2013)
- disconnect after gray screen

1.1.8 (Nov 2012)
- added support windows 8 (new capture engine)
- several bug fixes
- better multi monitor support
- new vncpasswd + encryption
Instead of using the password as part of the encryption, we now check the password insite the encryption by the server. This allow the server to blacklist servers after x fault password.
WARNING: If using encryption plugin + vncpassword you better upgrade. No protection against Brute force password hacking. (Feb 2012)
- removed beeps
- Capture alpha-Blending default value.
- Viewer crash fixed
- Grayscale fixed
- msi installers

- crash chat x64
- AuthRequired=0, passwd=NULL: Warning message block service
- About x64 say win32
- viewer 1082 and server 1096 with localcursor (no connect, 100% cpu)
- serversite scaling and multiple viewers, framebuffer size get overwritten (Scale is now lock when multiple viewers are connected to avoid a framebuffer change, first connected viewer set scale. Site effect is that the viewer report the unused, incorrect scale, but at least it doesn't crash anymore)
- -connect ip, passed to winvnc running as service is not remembered for autoreconnect
- -stopreconnect stop the autoreconnect function of the server
- server mouse moves jump on viewer when screen is idle
- old plugin zrle crash

- plugin (SecureVNCPlugin) used by viewer server without plugin give incorrect viewer message. And doesn't ask to reject the connection
- monitor value is saved, but vncviewer read it as bool (true/false)
- Only 0/1 are correct imported
- old plugins fail when zrle encoding is used
- old plugins give incorrect info in statusbox
- -autoreconnect timeout, -reconnectcounter number (available from gui and commandline)
- -autoreconnect timeout was incorrect, updated
- old plugin detection
- Messagebox was sometimes displayed on invisable desktop
- auth dll error messages for missing dll's incorrect
- mslogon and no groups, didn't checked admin account for access
- lock /logout screen on exit viewer option blocked shutdown server.

- mslogon fixed
- added special build: only one port for javaviewer (rfb port is used for java download and rfb data)




This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.