Is there any way to either tell a VNCViewer in LISTEN mode to automatically always accept all connections from SC servers, or to tell the SC server to not cause the viewer to display the connection query prompt?
My staff has been using standard WINVNC servers to connect to listening viewers without the prompt and is quite used to working that way. I'm getting some complaints about the accept connection prompt and I don't care much for it myself. It's just more clicks for little gain.
Perhaps it could prompt only if there's already a session in progress?
What are my options here? Thanks!
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/
- 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 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
Possible to disable the SC connection query prompt?
-
sbussinger
- Posts: 4
- Joined: 2006-03-31 09:41
-
sbussinger
- Posts: 4
- Joined: 2006-03-31 09:41
I was hoping there was an existing command line option I was missing rather than having to compile a custom version of the viewer.
If I do have to go the custom compilation route, is there anyway to tweak this from the SC source code side? I have some other changes I'd like to make there anyway and I'd like to limit the number of custom packages I have to mess with.
Thanks!
If I do have to go the custom compilation route, is there anyway to tweak this from the SC source code side? I have some other changes I'd like to make there anyway and I'd like to limit the number of custom packages I have to mess with.
Thanks!
Try to compile a SC yourself and you'll get what you are searching for... (I think)
Technical Info: To start a connection without the prompt "issue" you have "just" to make the server to use the RFB 003.006 protocol message instead the RFB 003.016 (that is used from the SC)
If you compile SC (without modifiing it) and it works prompting as usal... please tell me HOW, HOW, HOW you got it
I know you need the opposite of this topic below:
[topic=4533][/topic]
I think vncviewer option available coming soon to disable prompt feature for SC and classic winvnc based on latest vncviewer 1.0.1 or tabbed viewer 1.2.x
[topic=4533][/topic]
I think vncviewer option available coming soon to disable prompt feature for SC and classic winvnc based on latest vncviewer 1.0.1 or tabbed viewer 1.2.x
UltraVNC 1.0.9.6.1 (built 20110518)
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer
Re: Possible to disable the SC connection query prompt?
The prompt is not in SC, but in the viewer. I had the same problem and eliminated it by commenting about 10 lines of code and then recompiling; if you want, I can send you the modified version of the viewer
"Kids, You tried your best, and failed miserably. The lesson is, never try" (H. Simpson)
Re: Possible to disable the SC connection query prompt?
sorry for jump this topic, but is there a solution to that today without compiling?
i need that when single click user, connect to my computer(i'm using vnc viewer in listen mode), i'll not get a prompt that tell me that someone want to connect to me, but the connection will be without that prompt, and immediately it will create.
i need that when single click user, connect to my computer(i'm using vnc viewer in listen mode), i'll not get a prompt that tell me that someone want to connect to me, but the connection will be without that prompt, and immediately it will create.
- Rudi De Vos
- Admin & Developer

- Posts: 6977
- Joined: 2004-04-23 10:21
- Contact:
Re: Possible to disable the SC connection query prompt?
Not done.
If wecomment out that code part, then other people request to add it back.
The normal winvnc version doesn't have the prompt unless it's set.
For SC this is hardcoded.
If wecomment out that code part, then other people request to add it back.
The normal winvnc version doesn't have the prompt unless it's set.
For SC this is hardcoded.
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: Possible to disable the SC connection query prompt?
thank you rudi 
Re: Possible to disable the SC connection query prompt?
Hi, i think you should use:
Vncviewer.exe -listen -autoacceptincoming
Vncviewer.exe -listen -autoacceptincoming


