After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
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- Mastodon: https://mastodon.social/@ultravnc
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- OpenHub: https://openhub.net/p/ultravnc
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
UltraVNC 1.2.4.0 - Download links
- Rudi De Vos
- Admin & Developer

- Posts: 6977
- Joined: 2004-04-23 10:21
- Contact:
UltraVNC 1.2.4.0 - Download links
1.2.3.0 RC + mouse high dpi patch
INNO SETUP
https://uvnc.eu/download/1240/UltraVNC_ ... _Setup.exe
https://uvnc.eu/download/1240/UltraVNC_ ... _Setup.exe
BIN ZIP
https://uvnc.eu/download/1240/UltraVNC_1_2_40.zip
MSI
https://uvnc.eu/download/1240/UltraVnc_1240_X64.msi
https://uvnc.eu/download/1240/UltraVnc_1240_x86.msi
IPV6
https://uvnc.eu/download/1240/UltraVNC_1_2_40_IPv6.zip
INNO SETUP
https://uvnc.eu/download/1240/UltraVNC_ ... _Setup.exe
https://uvnc.eu/download/1240/UltraVNC_ ... _Setup.exe
BIN ZIP
https://uvnc.eu/download/1240/UltraVNC_1_2_40.zip
MSI
https://uvnc.eu/download/1240/UltraVnc_1240_X64.msi
https://uvnc.eu/download/1240/UltraVnc_1240_x86.msi
IPV6
https://uvnc.eu/download/1240/UltraVNC_1_2_40_IPv6.zip
UltraVNC links (join us on social networks):
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
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- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
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- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
Re: 1.2.4.0 Online
1.2.4.0 RC 32bit seems to work well for me so far... as did 1.2.3.0 RC with high dpi fix.
*The only hiccup so far for me, is when I compile it to be included in my single click portable exe... The minor change triggers the antivirus companies again w/ false positives.. but this is separate from UVNC and I will deal with them again.
For those interested. Here are the current release notes from the install of 1.2.4.0 RC
* Ultr@VNC - Latest modifications - History
1.2.4.0
-High dpi cursor offset fix
-reported 123 bugs fixed
Thank you Rudi
CPC
*The only hiccup so far for me, is when I compile it to be included in my single click portable exe... The minor change triggers the antivirus companies again w/ false positives.. but this is separate from UVNC and I will deal with them again.
For those interested. Here are the current release notes from the install of 1.2.4.0 RC
* Ultr@VNC - Latest modifications - History
1.2.4.0
-High dpi cursor offset fix
-reported 123 bugs fixed
Thank you Rudi
CPC
Last edited by CPC on 2020-02-11 23:38, edited 1 time in total.
Re: 1.2.4.0 Online
Also for me version 1.2.4.0 up to now works pretty smooth:
Many Thanks!
- Viewer does not require pressing connection button twice
- MSLogonACL seems to work fine again
- Multi-Screen setup is much more reliable (I often had more screen-update issues in multi-screen environments)
- Accurate mouse tracking independent from screen scaling
- Changing screen resolution or scaling on-the-fly worked fine on server and viewer side (just viewer does not auto-risize and leaving scrollbars)
- No issues yet observed also if multiple screens with different scaling are used
Many Thanks!
- Rudi De Vos
- Admin & Developer

- Posts: 6977
- Joined: 2004-04-23 10:21
- Contact:
Re: 1.2.4.0 Online
added msi
added ipv6
added ipv6
UltraVNC links (join us on social networks):
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
-
ThomasLevering
- 40

- Posts: 88
- Joined: 2015-01-23 06:45
Re: 1.2.4.0 Online
More then one Monitor on Client is not working with this Version (and 1.2.3.x reported)
With 1.2.x the Client Window can be bigger than the screen.
With 1.2.x the Client Window can be bigger than the screen.
Code: Select all
[options]
selectedscreen=0
Re: 1.2.4.0 Online
Hi,
first, thanks for hard working on UltraVNC.
Sadly we have problem with latest version 1.2.4.0 32bit (with IPv6) on Windows 2008 Server 64 bit and Win10 64bit too.
When we send (or receive) a file from client to server, the connection is broken, this is in the log.
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncclient.cpp : DSMPlugin Pointer to socket OK
--The system cannot find the path specified.
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncclient.cpp : Send protocolMsg
Tue Feb 11 07:08:05 2020
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncclient.cpp : Send_OK
Tue Feb 11 07:08:11 2020
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncmenu.cpp : vncMenu::Shutdown: Close menu - Disconnect all - Shutdown server
--The system cannot find the file specified.
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncmenu.cpp : vncMenu WM_CLOSE call - All cleanup done
On XP the 32 bit version (without ipv6), file sending, receiving is working.
Thanks
first, thanks for hard working on UltraVNC.
Sadly we have problem with latest version 1.2.4.0 32bit (with IPv6) on Windows 2008 Server 64 bit and Win10 64bit too.
When we send (or receive) a file from client to server, the connection is broken, this is in the log.
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncclient.cpp : DSMPlugin Pointer to socket OK
--The system cannot find the path specified.
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncclient.cpp : Send protocolMsg
Tue Feb 11 07:08:05 2020
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncclient.cpp : Send_OK
Tue Feb 11 07:08:11 2020
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncmenu.cpp : vncMenu::Shutdown: Close menu - Disconnect all - Shutdown server
--The system cannot find the file specified.
c:\users\rudi\desktop\ultravnc_1224\winvnc\winvnc\vncmenu.cpp : vncMenu WM_CLOSE call - All cleanup done
On XP the 32 bit version (without ipv6), file sending, receiving is working.
Thanks
- Rudi De Vos
- Admin & Developer

- Posts: 6977
- Joined: 2004-04-23 10:21
- Contact:
Re: 1.2.4.0 Online
reuploaded ipv6, some lib was set to SDk windows 10, possible this fail on 2008.
ipv6 bins are now rebuild with SDK 8.1
ipv6 bins are now rebuild with SDK 8.1
UltraVNC links (join us on social networks):
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
Re: 1.2.4.0 Online
I think the file compression is not working in the IPv6 version, because if i use my own vncviewer with compression, the vnc server dies. The UltraVNC viewer works, because it does not use compression either.
Or they use different compression than in non IPv6 version.
Or they use different compression than in non IPv6 version.
-
DaichiTech
- Posts: 3
- Joined: 2020-02-19 23:08
Re: 1.2.4.0 Online
Hi
1.2.4.0 works well for me.
However, I am having the occasional reconnect issues on a reverse connection as described here viewtopic.php?t=35886

1.2.4.0 works well for me.
However, I am having the occasional reconnect issues on a reverse connection as described here viewtopic.php?t=35886
-
mike_the_hike
- Posts: 2
- Joined: 2020-02-21 13:25
Re: 1.2.4.0 Online
Helle,
the vncviewer does not start... can you help?
the server run's correct.
Windows 10, 1909
the vncviewer does not start... can you help?
the server run's correct.
Windows 10, 1909
Re: 1.2.4.0 Online
Can someone help me with a script ? what is the command for autostart /autoboot when windows is starting , please help !
Re: 1.2.4.0 Online
@vibe13
Install winvnc.exe as a service that autostarts...
See https://uvnc.com/docs/uvnc-server/51-ul ... eters.html
A sample part of a batch file ran as an admin that may also help.
@ECHO OFF
start winvnc.exe -install
start winvnc.exe -startservice
Hope this helps.
CPC
Install winvnc.exe as a service that autostarts...
See https://uvnc.com/docs/uvnc-server/51-ul ... eters.html
A sample part of a batch file ran as an admin that may also help.
@ECHO OFF
start winvnc.exe -install
start winvnc.exe -startservice
Hope this helps.
CPC

