Hi Rudi,
installers checksums on download page for UltraVNC 1.6.4.0 are invalid for x64 and x86 exe's, they are actually copied from x64 and x86 msi variants.
also link pointing to forum points to discussion around ver. 1.6.1.0 - this is maybe mistake too ?
Thanks for correction.
After more 1 000 000 (one 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 welcome
Celebrating the 22th anniversary of the UltraVNC (25th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38031
Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
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
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 welcome
Celebrating the 22th anniversary of the UltraVNC (25th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38031
Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
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
Search found 10 matches
- 2025-06-23 19:57
- Forum: 1.6.x
- Topic: UltraVNC 1.6.4.0 - Feedbacks
- Replies: 14
- Views: 55416
- 2025-05-21 22:41
- Forum: 1.6.x
- Topic: UltraVNC 1.6.2.0-dev - Feedbacks
- Replies: 3
- Views: 19455
Re: UltraVNC 1.6.2.0-dev - Feedbacks
Hi Rudi, I tried winvnc_SC.exe 1.6.2.0 + viewer 1.6.2.0 64bit, but I am still unable to connect with securedsm and SC_Server_ClientAuth.pubkey / viewer pkey.
After connection establishes, status windows with "password requested" appears, but no confirmation (allow/reject connection) window, after ...
After connection establishes, status windows with "password requested" appears, but no confirmation (allow/reject connection) window, after ...
- 2025-05-15 23:06
- Forum: 1.6.x
- Topic: UltraVNC 1.6.1.0 - Feedbacks
- Replies: 38
- Views: 352079
Re: UltraVNC 1.6.1.0 - Feedbacks
Hi Rudi De Vos ,
I tried ultravnc_sc_1610.zip with dsm plugin and custom
SC_Server_ClientAuth.pubkey
but connecting to viewer I got status window (see bellow) asking for password? It should not ask for any password, or is there some sc option to specify one?
Another bug - vncviewer.exe, when you ...
I tried ultravnc_sc_1610.zip with dsm plugin and custom
SC_Server_ClientAuth.pubkey
but connecting to viewer I got status window (see bellow) asking for password? It should not ask for any password, or is there some sc option to specify one?
Another bug - vncviewer.exe, when you ...
- 2025-05-03 21:26
- Forum: 1.6.x
- Topic: UltraVNC 1.6.0.0 - Feedbacks
- Replies: 20
- Views: 66466
Re: UltraVNC 1.6.0.0 - Feedbacks
Hi Rudi, I could also participate on UltraVNC SC 1.6.x.x testing if you would send me UltraVNC SC build.Rudi De Vos wrote: 2025-04-28 20:23 @lwc: I didn't found any time to test it, if you want, I can send a UltraVNC SC build but I didn't wanted to postpone the release only because UltraVNC SC wasn't tested.
- 2025-04-10 20:48
- Forum: 1.5.x
- Topic: UltraVNC 1.5.0.X-dev - Feedbacks
- Replies: 83
- Views: 1537338
Re: UltraVNC 1.5.0.X-dev - Feedbacks
Hi Rudi,
I tested 1.5.0.17 x64, and international keys work as expected, tested on W10pro, W11pro with SK/CZ keyboards.
Thank you very much
I tested 1.5.0.17 x64, and international keys work as expected, tested on W10pro, W11pro with SK/CZ keyboards.
Thank you very much

- 2025-03-28 14:01
- Forum: 1.5.x
- Topic: UltraVNC 1.5.0.X-dev - Feedbacks
- Replies: 83
- Views: 1537338
Re: UltraVNC 1.5.0.X-dev - Feedbacks
Hi Rudi,
minor bugs - right click winvnc.exe trayicon (run as service), choose "stop service" - and nothing happens, service remains running.
Also - there were handy possibility to stop and start service via setting dialog, which is now absent, but it was sometimes helpful.
Max FPS slider ...
minor bugs - right click winvnc.exe trayicon (run as service), choose "stop service" - and nothing happens, service remains running.
Also - there were handy possibility to stop and start service via setting dialog, which is now absent, but it was sometimes helpful.
Max FPS slider ...
- 2025-03-24 09:19
- Forum: 1.5.x
- Topic: UltraVNC 1.5.0.X-dev - Feedbacks
- Replies: 83
- Views: 1537338
Re: UltraVNC 1.5.0.X-dev - Feedbacks
... and please theese international keys, what doesn't pass through, could be corrected ? (Win 10, LangID 0x41B, sk-SK , the accented letters "š , ť , ř , ž " - ALT+0154 , ALT+0157 , ALT+0248 , ALT+0158) 

- 2025-03-24 08:11
- Forum: 1.5.x
- Topic: UltraVNC 1.5.0.X-dev - Feedbacks
- Replies: 83
- Views: 1537338
Re: UltraVNC 1.5.0.X-dev - Feedbacks
Hi Rudi,
when running as admin the new "Ultravnc server settings" from start menu, and using DSM plugin, clicking "configure encryption",plugin config window does not appear (unlike when you right click running server icon, Setting, then dsm plugin windows appears).
Also clicking "configure ms ...
when running as admin the new "Ultravnc server settings" from start menu, and using DSM plugin, clicking "configure encryption",plugin config window does not appear (unlike when you right click running server icon, Setting, then dsm plugin windows appears).
Also clicking "configure ms ...
- 2025-03-14 20:27
- Forum: 1.5.x
- Topic: UltraVNC 1.5.0.X-dev - Feedbacks
- Replies: 83
- Views: 1537338
Re: UltraVNC 1.5.0.X-dev - Feedbacks
Hi Rudi,
tried install of 1.5.0.10 over 1.4.3.6. When you've enabled "start or restart UltraVNC service" during installation, the service starts after install, but initially it's using C:\Program Files\uvnc bvba\UltraVNC\ultravnc.ini
And also the ultravnc.ini file gets copied to C:\ProgramData ...
tried install of 1.5.0.10 over 1.4.3.6. When you've enabled "start or restart UltraVNC service" during installation, the service starts after install, but initially it's using C:\Program Files\uvnc bvba\UltraVNC\ultravnc.ini
And also the ultravnc.ini file gets copied to C:\ProgramData ...
- 2025-03-10 21:37
- Forum: 1.5.x
- Topic: UltraVNC 1.5.0.X-dev - Feedbacks
- Replies: 83
- Views: 1537338
Re: UltraVNC 1.5.0.X-dev - Feedbacks
Hi Rudi,
when trying 1.5.0.9, the line
DSMPluginConfig= .....
is missing in ultravnc.ini, so the plugin settings are not saved.
Another little bug found - when pressing some international keys during session, they are are ignored, in Win 10, LangID 0x41B sk-SK , the accented letters "š , ť , ř ...
when trying 1.5.0.9, the line
DSMPluginConfig= .....
is missing in ultravnc.ini, so the plugin settings are not saved.
Another little bug found - when pressing some international keys during session, they are are ignored, in Win 10, LangID 0x41B sk-SK , the accented letters "š , ť , ř ...